Security Advisory

CVE-2026-12993

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-06-25 23:23:20

Last updated 2026-06-29 18:12:24

Assigner redhat

CVSS score not scored

State PUBLISHED

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.

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