apicurio/apicurio-registry · Security
Apicurio Registry is vulnerable to denial of service through XML entity expansion
- GHSA ID
- GHSA-748j-wm96-4wh5
- CVE ID
- CVE-2026-12993
- Severity
- medium
- Published
- Updated
- CVSS
- 6.5 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- CVSS v3
- 6.5 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Description
A flaw was found in Apicurio Registry. The DocumentBuilderAccessor correctly blocks external DTD and schema access but does not disable DOCTYPE declarations or enable FEATURE_SECURE_PROCESSING. An attacker with artifact-write permission can upload XML documents with internal entity-expansion payloads (billion-laughs variant) that cause CPU and heap exhaustion, partially mitigated by the JAXP default 64,000 entity-expansion limit.
CWEs
- CWE-776 · Improper Restriction of Recursive Entity References in DTDs
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-12993 ↗
- https://access.redhat.com/security/cve/CVE-2026-12993 ↗
- https://bugzilla.redhat.com/show_bug.cgi?id=2491692 ↗
- https://access.redhat.com/errata/RHSA-2026:59360 ↗
- https://github.com/Apicurio/apicurio-registry/issues/8189 ↗
- https://github.com/Apicurio/apicurio-registry/pull/8200 ↗
- https://github.com/Apicurio/apicurio-registry/commit/03cd1cc081d9b1b4c8b9a59330ff4c980dc68b73 ↗
- https://github.com/Apicurio/apicurio-registry/commit/48369d0e9008f7aab16dce5970c1ecbdd55e9aa5 ↗
- https://github.com/Apicurio/apicurio-registry/releases/tag/3.3.1 ↗
- https://github.com/Apicurio/apicurio-registry/releases/tag/v3.2.6 ↗
- https://github.com/advisories/GHSA-748j-wm96-4wh5 ↗