CVE-2026-59085
Apache CloudStack: Server-Side Request Forgery (SSRF) vulnerability in webhook module
Description
Server-Side Request Forgery (SSRF) vulnerability in Apache CloudStack's webhook module, exploitable via webhook delivery requests. This issue affects Apache CloudStack: from 4.20.0.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0. Users are recommended to upgrade to version 4.20.3.1 or 4.22.1.1 or later, which fixes the issue.
INFO
Published Date :
Aug. 21, 2026, 9:16 a.m.
Last Modified :
Aug. 27, 2026, 12:38 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | CRITICAL | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Upgrade to Apache CloudStack version 4.20.3.1 or later.
- Upgrade to Apache CloudStack version 4.22.1.1 or later.
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-2026-59085.
| URL | Resource |
|---|---|
| https://lists.apache.org/thread/g6cwddtjrwbh1d56wjz4cfp3fzfm4kbc | Vendor Advisory Mailing List |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-59085 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-2026-59085
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).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-59085 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-59085 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.
-
Initial Analysis by [email protected]
Aug. 27, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:apache:cloudstack:*:*:*:*:*:*:*:* versions from (including) 4.21.0.0 up to (excluding) 4.22.1.1 *cpe:2.3:a:apache:cloudstack:*:*:*:*:*:*:*:* versions from (including) 4.20.0.0 up to (excluding) 4.20.3.1 Added Reference Type Apache Software Foundation: https://lists.apache.org/thread/g6cwddtjrwbh1d56wjz4cfp3fzfm4kbc Types: Mailing List, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 25, 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:N Added SSVC {'id': 'CVE-2026-59085', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-08-25T19:25:26.600887Z'} -
New CVE Received by [email protected]
Aug. 21, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Apache Software Foundation', 'product': 'Apache CloudStack', 'versions': [{'status': 'affected', 'version': '4.20.0.0', 'versionType': 'semver', 'lessThanOrEqual': '4.20.3.0'}, {'status': 'affected', 'version': '4.21.0.0', 'versionType': 'semver', 'lessThanOrEqual': '4.22.1.0'}], 'defaultStatus': 'unaffected'}] Added Description Server-Side Request Forgery (SSRF) vulnerability in Apache CloudStack's webhook module, exploitable via webhook delivery requests. This issue affects Apache CloudStack: from 4.20.0.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0. Users are recommended to upgrade to version 4.20.3.1 or 4.22.1.1 or later, which fixes the issue. Added CWE CWE-918 Added Reference https://lists.apache.org/thread/g6cwddtjrwbh1d56wjz4cfp3fzfm4kbc