CVE-2026-12993
MEDIUMApicurio/apicurio-registry: apicurio-registry: xml entity-expansion denial of service via internal dtd subset
Title source: cnaDescription
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.
References (2)
Core 2
Core References
Vdb Entry, X_Refsource_Redhat vdb-entry
x_refsource_redhat
https://access.redhat.com/security/cve/CVE-2026-12993
Issue Tracking, X_Refsource_Redhat issue-tracking
x_refsource_redhat
RHBZ#2491692
https://bugzilla.redhat.com/show_bug.cgi?id=2491692
Scores
CVSS v3
6.5
EPSS
0.0024
EPSS Percentile
15.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-776
Status
published
Products (2)
Red Hat/Red Hat build of Apicurio Registry 3
redhat/build_of_apicurio_registry
3.0 - 3.2
Published
Jun 26, 2026
Tracked Since
Jun 26, 2026