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Medium 6.5Published Jun 25, 2026

CVE-2026-12993Apicurio/apicurio-registry: apicurio-registry: xml entity-expansion denial of service via internal dtd subset

Updated under an hour ago ()

Does this affect you?

It affects Red Hat build of Apicurio Registry 3.3.1 and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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.

CVSS
6.5 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE)
CWE-776
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
redhat
NVD analysis
Modified
Record last updated
Aug 25, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
3.3
CNA record
redhat build_of_apicurio_registry
redhat:build_of_apicurio_registry
from 3.0 through 3.2
NVD

References

References

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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