CVE-2026-12975 Details
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.
A vulnerability exists in Apicurio Registry versions 3, where the ContentTypeUtil.isParsableXml() method creates a SAXParserFactory without enabling secure processing or disabling external entity resolution. This flaw allows an attacker with artifact-write permission, or unauthenticated when the registry is configured with defaults, to upload a manipulated XML document. Exploitation can lead to blind server-side request forgery (SSRF) by fetching external DTDs or entities, or cause a denial-of-service by expanding entities.
To address this vulnerability, the SAXParserFactory should be configured to disable external DTD and general entity resolution, and to enable secure processing. Alternatively, the 'DocumentBuilderAccessor' pattern can be used with the additional 'disallow-doctype-decl' flag.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Jun 26, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://access.redhat.com/errata/RHSA-2026:59360 | redhat-SADP | |
| https://access.redhat.com/security/cve/CVE-2026-12975 | redhat-SADP | Vendor Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2491688 | redhat-SADP | Issue TrackingVendor Advisory |
| https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-12975.json | redhat-SADP | Vendor Advisory |
| https://access.redhat.com/errata/RHSA-2026:59360 | [email protected] | |
| https://access.redhat.com/security/cve/CVE-2026-12975 | [email protected] | Vendor Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2491688 | [email protected] | Issue TrackingVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-611 | Improper Restriction of XML External Entity Reference | redhat-SADP |
| CWE-611 | Improper Restriction of XML External Entity Reference | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| redhat build of apicurio registry | >= 3.0, <= 3.2 |
CPE
Remediation
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Change History
8 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 26, 2026 | CVE Modified | [email protected] |
| Aug 26, 2026 | CVE Modified | redhat-SADP |
| Aug 25, 2026 | CVE Modified | [email protected] |
| Jul 15, 2026 | CVE Modified | redhat-SADP |
| Jul 6, 2026 | Initial Analysis | [email protected] |
| Jun 30, 2026 | CVE Modified | redhat-SADP |
| Jun 26, 2026 | CVE Modified | CISA-ADP |
| Jun 25, 2026 | New CVE Received | [email protected] |