Vulnerability Details CVE-2026-12993
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 16.1%
CVSS Severity
CVSS v3 Score 6.5
Products affected by CVE-2026-12993
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cpe:2.3:a:redhat:build_of_apicurio_registry:3.0
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cpe:2.3:a:redhat:build_of_apicurio_registry:3.1
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cpe:2.3:a:redhat:build_of_apicurio_registry:3.2