CVE-2026-12993 | A flaw was found in Apicurio Registry. The DocumentBuilderAc… | CVSS 6.5 MEDIUM

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.

Metadata

CVE ID: CVE-2026-12993
State: PUBLISHED
Assigner: redhat
Reserved: 2026-06-23 12:18 UTC
Published: 2026-06-25 23:23 UTC
Last updated: 2026-06-25 23:23 UTC
Primary CWE: CWE-776
Improper Restriction of Recursive Entity References in DTDs …
Vendor / Product: Red Hat / Red Hat build of Apicurio Registry 3
Sources: cve.org · NVD

Severity & Metrics

6.5 MEDIUM CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products (2)

Vendor	Product	Platform	Versions
Red Hat	Red Hat build of Apicurio Registry 3	—	—
Red Hat	Red Hat build of Apicurio Registry 3	—	—

Weakness (CWE)

CWE	Source	Description
CWE-776	cna	Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')

CVSS scores (1)

Score	Severity	Version	Source	Vector
6.5	MEDIUM	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References (2)