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CVE PROGRAM SOURCE RECORD6.5 Medium

CVE-2026-12993

Apicurio/apicurio-registry: apicurio-registry: xml entity-expansion denial of service via internal dtd subset

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Red Hat Red Hat build of Apicurio Registry 3.3.1

Default version status: unaffected

Red Hat Red Hat build of Apicurio Registry 3.3.1

Default version status: unaffected

References