9.8
CRITICAL
CVSS 3.1
CVE-2026-28780
Apache HTTP Server: buffer overflow in mod_proxy_ajp via ajp_msg_check_header()
Overview
Description
Heap-based Buffer Overflow vulnerability in mod_proxy_ajp of Apache HTTP Server. If mod_proxy_ajp connects to a malicious AJP server this AJP server can send a malicious AJP message back to mod_proxy_ajp and cause it to write 4 attacker controlled bytes after the end of a heap based buffer. This issue affects Apache HTTP Server: through 2.4.66. Users are recommended to upgrade to version 2.4.67, which fixes the issue.
Details
INFO
Published Date :
May 5, 2026, 10:16 p.m.
Last Modified :
July 15, 2026, 2:19 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework
for assessing the severity of vulnerabilities in software and systems.
We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | CRITICAL | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | ||||
| CVSS 3.1 | HIGH | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c |
Solution
Update Apache HTTP Server to version 2.4.67 or later to address the heap-based buffer overflow.
- Upgrade Apache HTTP Server to version 2.4.67 or later.
- Apply vendor-provided patches for mod_proxy_ajp.
- Ensure AJP connections are from trusted sources.
Public PoC/Exploit Available at Github
CVE-2026-28780 has a 4 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-28780.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-28780 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-28780
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
None
Updated: 2 months ago
0 stars
0 fork
0 watcher
Born at : May 19, 2026, 6:58 p.m.
This repo has been linked 3 different CVEs too.
Python toolkit to audit Apache HTTP Server against CVE-2026-23918 (HTTP/2 double-free RCE) and 4 related CVEs. Passive scanner with ALPN verification + read-only local auditor. No exploits.
Python
Updated: 2 months, 1 week ago
0 stars
1 fork
1 watcher
Born at : May 16, 2026, 9:18 a.m.
This repo has been linked 5 different CVEs too.
None
Python
Updated: 2 months, 1 week ago
0 stars
0 fork
0 watcher
Born at : May 15, 2026, 4:41 p.m.
This repo has been linked 2 different CVEs too.
Automated Vulnerability Discovery Agent Pipeline
Python
Updated: 4 days, 9 hours ago
12 stars
3 fork
3 watcher
Born at : March 14, 2026, 7:28 a.m.
This repo has been linked 10 different CVEs too.
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-28780 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-28780 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Jul. 15, 2026
Action Type Old Value New Value Changed Affected [{'cpes': ['cpe:/a:redhat:jboss_core_services:1::el7'], 'vendor': 'Red Hat', 'product': 'Red Hat JBoss Core Services on RHEL 7 Server', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:jboss_core_services:1::el8'], 'vendor': 'Red Hat', 'product': 'Red Hat JBoss Core Services on RHEL 8', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:10.2'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream (v. 10)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:enterprise_linux:8::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream (v. 8)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_aus:8.4::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream AUS (v.8.4)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_eus_long_life:8.4::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_aus:8.6::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream AUS (v.8.6)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_eus_long_life:8.6::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_e4s:8.8::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream E4S (v.8.8)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_tus:8.8::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream TUS (v.8.8)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:enterprise_linux:9::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream (v. 9)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:jboss_core_services:1'], 'vendor': 'Red Hat', 'product': 'Red Hat JBoss Core Services 2.4.62.SP4', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:6'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 6', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:7'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 7', 'defaultStatus': 'affected'}] [{'cpes': ['cpe:/a:redhat:jboss_core_services:1::el8'], 'vendor': 'Red Hat', 'product': 'JBoss Core Services for RHEL 8', 'versions': [{'status': 'unaffected', 'version': '0:2.4.62-13.el8jbcs', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'jbcs-httpd24-httpd', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:jboss_core_services:1::el7'], 'vendor': 'Red Hat', 'product': 'JBoss Core Services on RHEL 7', 'versions': [{'status': 'unaffected', 'version': '0:2.4.62-13.el7jbcs', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'jbcs-httpd24-httpd', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:10.2'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 10', 'versions': [{'status': 'unaffected', 'version': '0:2.4.63-13.el10_2.1', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'httpd', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:enterprise_linux:8'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 8', 'versions': [{'status': 'unaffected', 'version': '8100020260519200905.489197e6', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'httpd:2.4', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_aus:8.4'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support', 'versions': [{'status': 'unaffected', 'version': '8040020260702193120.522a0ee4', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'httpd:2.4', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_eus_long_life:8.4'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On', 'versions': [{'status': 'unaffected', 'version': '8040020260702193120.522a0ee4', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'httpd:2.4', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_aus:8.6'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support', 'versions': [{'status': 'unaffected', 'version': '8060020260702195216.ad008a3a', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'httpd:2.4', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_eus_long_life:8.6'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On', 'versions': [{'status': 'unaffected', 'version': '8060020260702195216.ad008a3a', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'httpd:2.4', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_tus:8.8'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 8.8 Telecommunications Update Service', 'versions': [{'status': 'unaffected', 'version': '8080020260702200145.63b34585', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'httpd:2.4', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_e4s:8.8'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions', 'versions': [{'status': 'unaffected', 'version': '8080020260702200145.63b34585', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'httpd:2.4', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:enterprise_linux:9'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 9', 'versions': [{'status': 'unaffected', 'version': '0:2.4.62-13.el9_8.1', 'lessThan': '*', 'versionType': 'rpm'}], 'packageName': 'httpd', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:jboss_core_services:1'], 'vendor': 'Red Hat', 'product': 'Red Hat JBoss Core Services 2.4.62.SP4', 'packageName': 'httpd', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'unaffected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:6'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 6', 'packageName': 'httpd', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:7'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 7', 'packageName': 'httpd', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}] -
CVE Modified by 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Jul. 09, 2026
Action Type Old Value New Value Added Reference https://access.redhat.com/errata/RHSA-2026:36831 Added Reference https://access.redhat.com/errata/RHSA-2026:36846 Changed Affected [{'cpes': ['cpe:/a:redhat:jboss_core_services:1::el7'], 'vendor': 'Red Hat', 'product': 'Red Hat JBoss Core Services on RHEL 7 Server', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:jboss_core_services:1::el8'], 'vendor': 'Red Hat', 'product': 'Red Hat JBoss Core Services on RHEL 8', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:10.2'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream (v. 10)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:enterprise_linux:8::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream (v. 8)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_e4s:8.8::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream E4S (v.8.8)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_tus:8.8::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream TUS (v.8.8)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:enterprise_linux:9::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream (v. 9)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:jboss_core_services:1'], 'vendor': 'Red Hat', 'product': 'Red Hat JBoss Core Services 2.4.62.SP4', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:6'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 6', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:7'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 7', 'defaultStatus': 'affected'}] [{'cpes': ['cpe:/a:redhat:jboss_core_services:1::el7'], 'vendor': 'Red Hat', 'product': 'Red Hat JBoss Core Services on RHEL 7 Server', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:jboss_core_services:1::el8'], 'vendor': 'Red Hat', 'product': 'Red Hat JBoss Core Services on RHEL 8', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:10.2'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream (v. 10)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:enterprise_linux:8::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream (v. 8)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_aus:8.4::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream AUS (v.8.4)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_eus_long_life:8.4::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_aus:8.6::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream AUS (v.8.6)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_eus_long_life:8.6::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.6)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_e4s:8.8::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream E4S (v.8.8)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_tus:8.8::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream TUS (v.8.8)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:enterprise_linux:9::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream (v. 9)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:jboss_core_services:1'], 'vendor': 'Red Hat', 'product': 'Red Hat JBoss Core Services 2.4.62.SP4', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:6'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 6', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:7'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 7', 'defaultStatus': 'affected'}] -
CVE Modified by 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Jul. 08, 2026
Action Type Old Value New Value Added Reference https://access.redhat.com/errata/RHSA-2026:36373 Changed Affected [{'cpes': ['cpe:/a:redhat:jboss_core_services:1::el7'], 'vendor': 'Red Hat', 'product': 'Red Hat JBoss Core Services on RHEL 7 Server', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:jboss_core_services:1::el8'], 'vendor': 'Red Hat', 'product': 'Red Hat JBoss Core Services on RHEL 8', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:10.2'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream (v. 10)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:enterprise_linux:8::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream (v. 8)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:enterprise_linux:9::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream (v. 9)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:jboss_core_services:1'], 'vendor': 'Red Hat', 'product': 'Red Hat JBoss Core Services 2.4.62.SP4', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:6'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 6', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:7'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 7', 'defaultStatus': 'affected'}] [{'cpes': ['cpe:/a:redhat:jboss_core_services:1::el7'], 'vendor': 'Red Hat', 'product': 'Red Hat JBoss Core Services on RHEL 7 Server', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:jboss_core_services:1::el8'], 'vendor': 'Red Hat', 'product': 'Red Hat JBoss Core Services on RHEL 8', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:10.2'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream (v. 10)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:enterprise_linux:8::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream (v. 8)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_e4s:8.8::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream E4S (v.8.8)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:rhel_tus:8.8::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream TUS (v.8.8)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:enterprise_linux:9::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream (v. 9)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:jboss_core_services:1'], 'vendor': 'Red Hat', 'product': 'Red Hat JBoss Core Services 2.4.62.SP4', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:6'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 6', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:7'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 7', 'defaultStatus': 'affected'}] -
CVE Modified by 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Jun. 30, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:/a:redhat:jboss_core_services:1::el7'], 'vendor': 'Red Hat', 'product': 'Red Hat JBoss Core Services on RHEL 7 Server', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:jboss_core_services:1::el8'], 'vendor': 'Red Hat', 'product': 'Red Hat JBoss Core Services on RHEL 8', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:10.2'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream (v. 10)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:enterprise_linux:8::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream (v. 8)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:enterprise_linux:9::appstream'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux AppStream (v. 9)', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:jboss_core_services:1'], 'vendor': 'Red Hat', 'product': 'Red Hat JBoss Core Services 2.4.62.SP4', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:6'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 6', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/o:redhat:enterprise_linux:7'], 'vendor': 'Red Hat', 'product': 'Red Hat Enterprise Linux 7', 'defaultStatus': 'affected'}] Added CVSS V3.1 AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H Added CWE CWE-787 Added Reference https://access.redhat.com/errata/RHSA-2026:21391 Added Reference https://access.redhat.com/errata/RHSA-2026:21433 Added Reference https://access.redhat.com/errata/RHSA-2026:22140 Added Reference https://access.redhat.com/errata/RHSA-2026:27200 Added Reference https://access.redhat.com/errata/RHSA-2026:27201 Added Reference https://access.redhat.com/security/cve/CVE-2026-28780 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=2466913 Added Reference https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-28780.json -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 17, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-28780', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-05-06T15:49:38.049896Z'} -
CVE Modified by [email protected]
Jun. 17, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Apache Software Foundation', 'product': 'Apache HTTP Server', 'versions': [{'status': 'affected', 'version': '0', 'versionType': 'semver', 'lessThanOrEqual': '2.4.66'}], 'defaultStatus': 'unaffected'}] -
Initial Analysis by [email protected]
May. 06, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:* versions up to (excluding) 2.4.67 Added Reference Type CVE: http://www.openwall.com/lists/oss-security/2026/05/05/9 Types: Mailing List, Third Party Advisory Added Reference Type Apache Software Foundation: https://httpd.apache.org/security/vulnerabilities_24.html Types: Release Notes, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
May. 06, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
May. 05, 2026
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2026/05/05/9 -
New CVE Received by [email protected]
May. 05, 2026
Action Type Old Value New Value Added Description Heap-based Buffer Overflow vulnerability in mod_proxy_ajp of Apache HTTP Server. If mod_proxy_ajp connects to a malicious AJP server this AJP server can send a malicious AJP message back to mod_proxy_ajp and cause it to write 4 attacker controlled bytes after the end of a heap based buffer. This issue affects Apache HTTP Server: through 2.4.66. Users are recommended to upgrade to version 2.4.67, which fixes the issue. Added CWE CWE-122 Added Reference https://httpd.apache.org/security/vulnerabilities_24.html
EPSS is a daily estimate of the probability of exploitation activity
being observed over the next 30 days. Following chart shows the EPSS
score history of the vulnerability.