PT-2026-52629 · Red Hat · Red Hat Build Of Apicurio Registry 3

Published 2026-06-25 · Updated 2026-06-26 · CVE-2026-12993

Mitre

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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.

Fix

XML Entity Expansion

Weakness Enumeration

CWE-776

Related Identifiers

CVE-2026-12993

Affected Products

Red Hat Build Of Apicurio Registry 3

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-12993 · Security Note
• https://bugzilla.redhat.com/show_bug.cgi?id=2491692 · Note
• https://access.redhat.com/security/cve/CVE-2026-12993 · Note