{"id":"CVE-2026-12993","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-12993","summary":"Apicurio Registry is vulnerable to denial of service through XML entity expansion","details":"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.","published":"2026-06-26T00:32:07Z","modified":"2026-11-04T18:30:03.811147678Z","cvss":{"score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"io.apicurio:apicurio-registry-schema-util-xml","fixedVersion":"3.3.1"},{"ecosystem":"Maven","name":"io.apicurio:apicurio-registry-schema-util-xml","fixedVersion":"3.2.6"}],"fix":{"url":"https://github.com/Apicurio/apicurio-registry/pull/8200","label":"Apicurio/apicurio-registry#8200"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-12993"},{"type":"WEB","url":"https://github.com/Apicurio/apicurio-registry/issues/8189"},{"type":"WEB","url":"https://github.com/Apicurio/apicurio-registry/pull/8200"},{"type":"WEB","url":"https://github.com/Apicurio/apicurio-registry/commit/03cd1cc081d9b1b4c8b9a59330ff4c980dc68b73"},{"type":"WEB","url":"https://github.com/Apicurio/apicurio-registry/commit/48369d0e9008f7aab16dce5970c1ecbdd55e9aa5"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:59360"},{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2026-12993"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2491692"},{"type":"WEB","url":"https://github.com/Apicurio/apicurio-registry/releases/tag/3.3.1"},{"type":"WEB","url":"https://github.com/Apicurio/apicurio-registry/releases/tag/v3.2.6"},{"type":"PACKAGE","url":"https://github.com/apicurio/apicurio-registry"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-11-04T18:30:03.811147678Z"}}