What is CVE-2026-12993?

CVE-2026-12993 is a medium-severity vulnerability in Red Hat Build Of Apicurio Registry 3, classified under Improper Restriction of Recursive Entity References in DTDs (XML Entity Expansion). CVSS score: 6.5/10. Published 2026-06-26.

How severe is CVE-2026-12993?

Medium severity. CVSS v3 base score is 6.5 out of 10.

XXE in Red Hat Build Of Apicurio Registry 3

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 ca…

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

Red Hat Build Of Apicurio Registry 3

Weakness classification (CWE)

CWE-776 — Improper Restriction of Recursive Entity References in DTDs (XML Entity Expansion)

References

secalert@redhat.com (x_refsource_REDHAT, vdb-entry)
secalert@redhat.com (x_refsource_REDHAT, issue-tracking)

Frequently asked questions

What is CVE-2026-12993?: CVE-2026-12993 is a medium-severity vulnerability in Red Hat Build Of Apicurio Registry 3, classified under Improper Restriction of Recursive Entity References in DTDs (XML Entity Expansion). CVSS score: 6.5/10. Published 2026-06-26.
How severe is CVE-2026-12993?: Medium severity. CVSS v3 base score is 6.5 out of 10.