CVE-2026-12975
Apicurio/apicurio-registry: apicurio-registry: unhardened saxparser in content-type detection leads to blind xxe / ssrf / billion-laughs dos
Description
A flaw was found in Apicurio Registry. The ContentTypeUtil.isParsableXml() method creates a SAXParserFactory without enabling secure processing features or disabling external entity resolution. An attacker with artifact-write permission (or unauthenticated when the registry runs with default configuration) can upload a crafted XML document to trigger blind server-side request forgery (SSRF) via external DTD/entity fetch, or cause denial of service via entity expansion.
INFO
Published Date :
June 25, 2026, 10:17 p.m.
Last Modified :
July 15, 2026, 2:18 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 | HIGH | 53f830b8-0a3f-465b-8143-3b8a9948e749 | ||||
| CVSS 3.1 | HIGH | MITRE-CVE | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c |
Solution
- Update Apicurio Registry to the latest version.
- Configure SAXParserFactory to disable external entities.
- Enable secure processing features for SAXParserFactory.
- Restrict artifact-write permissions.
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-2026-12975.
| URL | Resource |
|---|---|
| https://access.redhat.com/security/cve/CVE-2026-12975 | Vendor Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2491688 | Issue Tracking Vendor Advisory |
| https://access.redhat.com/security/cve/CVE-2026-12975 | Vendor Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2491688 | Issue Tracking Vendor Advisory |
| https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-12975.json | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-12975 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-2026-12975
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-2026-12975 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-12975 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:apicurio_registry:3'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Apicurio Registry 3', 'defaultStatus': 'affected'}] [{'cpes': ['cpe:/a:redhat:apicurio_registry:3'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Apicurio Registry 3', 'packageName': 'apicurio/apicurio-registry-rhel8', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:apicurio_registry:3'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Apicurio Registry 3', 'packageName': 'apicurio/apicurio-registry-rhel9', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}] -
Initial Analysis by [email protected]
Jul. 06, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:redhat:build_of_apicurio_registry:*:*:*:*:*:*:*:* versions from (including) 3.0 up to (including) 3.2 Added Reference Type Red Hat, Inc.: https://access.redhat.com/security/cve/CVE-2026-12975 Types: Vendor Advisory Added Reference Type Red Hat, Inc.: https://bugzilla.redhat.com/show_bug.cgi?id=2491688 Types: Issue Tracking, Vendor Advisory Added Reference Type redhat-SADP: https://access.redhat.com/security/cve/CVE-2026-12975 Types: Vendor Advisory Added Reference Type redhat-SADP: https://bugzilla.redhat.com/show_bug.cgi?id=2491688 Types: Issue Tracking, Vendor Advisory Added Reference Type redhat-SADP: https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-12975.json Types: Vendor Advisory -
CVE Modified by 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Jun. 30, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:/a:redhat:apicurio_registry:3'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Apicurio Registry 3', 'defaultStatus': 'affected'}] Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:H Added CWE CWE-611 Added Reference https://access.redhat.com/security/cve/CVE-2026-12975 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=2491688 Added Reference https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-12975.json -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 26, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-12975', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-06-26T13:38:33.702476Z'} -
New CVE Received by [email protected]
Jun. 25, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:/a:redhat:apicurio_registry:3'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Apicurio Registry 3', 'packageName': 'apicurio/apicurio-registry-rhel8', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}, {'cpes': ['cpe:/a:redhat:apicurio_registry:3'], 'vendor': 'Red Hat', 'product': 'Red Hat build of Apicurio Registry 3', 'packageName': 'apicurio/apicurio-registry-rhel9', 'collectionURL': 'https://access.redhat.com/downloads/content/package-browser/', 'defaultStatus': 'affected'}] Added Description A flaw was found in Apicurio Registry. The ContentTypeUtil.isParsableXml() method creates a SAXParserFactory without enabling secure processing features or disabling external entity resolution. An attacker with artifact-write permission (or unauthenticated when the registry runs with default configuration) can upload a crafted XML document to trigger blind server-side request forgery (SSRF) via external DTD/entity fetch, or cause denial of service via entity expansion. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:H Added CWE CWE-611 Added Reference https://access.redhat.com/security/cve/CVE-2026-12975 Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=2491688