{"id":"CVE-2026-12993","aliases":["EUVD-2026-39593","GHSA-748j-wm96-4wh5"],"status":"published","title":"Apicurio/apicurio-registry: apicurio-registry: xml entity-expansion denial of service via internal dtd subset","description":"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.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00519,"percentile":0.44395,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-776"],"published":"2026-06-25T23:23:20Z","modified":"2026-11-04T18:30:03Z","fixes":[{"ecosystem":"Maven","package":"io.apicurio:apicurio-registry-schema-util-xml","fixed_in":["3.3.1","3.2.6"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"io.apicurio:apicurio-registry-schema-util-xml","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.3.0"},{"fixed":"3.3.1"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"io.apicurio:apicurio-registry-schema-util-xml","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.2.6"}]}]},{"source":"osv","ecosystem":"Maven","package":"io.apicurio:apicurio-registry-schema-util-xml","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.3.0"},{"fixed":"3.3.1"}]}],"versions":["3.3.0"]},{"source":"osv","ecosystem":"Maven","package":"io.apicurio:apicurio-registry-schema-util-xml","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.2.6"}]}],"versions":["2.1.4.Final","2.1.5.Final","2.2.0.Final","2.2.1.Final","2.2.2.Final","2.2.3.Final","2.2.4.Final","2.2.5.Final","2.3.0.Final","2.3.1.Final","2.4.0.Final","2.4.1.Final","2.4.10.Final","2.4.11.Final","2.4.12.Final","2.4.13.Final","2.4.14.Final","2.4.2.Final","2.4.3.Final","2.4.4.Final","2.4.5.Final","2.4.6.Final","2.4.7.Final","2.4.8.Final","2.4.9.Final","2.5.0.Final","2.5.1.Final","2.5.10.Final","2.5.11.Final","2.5.2.Final","2.5.3.Final","2.5.5.Final","2.5.6.Final","2.5.7.Final","2.5.8.Final","2.5.9.Final","2.6.0.Final","2.6.1.Final","2.6.11.Final","2.6.12.Final","2.6.13.Final","2.6.2.Final","2.6.3.Final","2.6.4.Final","2.6.5.Final","2.6.6.Final","2.6.7.Final","2.6.8.Final","2.6.9.Final","3.0.0","3.0.0.M1","3.0.0.M2","3.0.0.M3","3.0.0.M4","3.0.0.M5","3.0.1","3.0.10","3.0.11","3.0.12","3.0.13","3.0.14","3.0.15","3.0.2","3.0.3","3.0.4","3.0.5","3.0.6","3.0.7","3.0.8","3.0.9","3.1.0","3.1.1","3.1.2","3.1.3","3.1.4","3.1.5","3.1.6","3.1.7","3.2.0","3.2.1","3.2.2","3.2.3","3.2.4","3.2.5"]}],"products":[{"vendor":"red hat","product":"red hat build of apicurio registry 3.3.1"},{"vendor":"redhat","product":"build_of_apicurio_registry"}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:59360","tags":["vendor-advisory","x_refsource_REDHAT","web"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-12993","tags":["vdb-entry","x_refsource_REDHAT","Vendor Advisory","web"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2491692","tags":["issue-tracking","x_refsource_REDHAT","Issue Tracking","Vendor Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-12993","tags":["advisory"]},{"url":"https://github.com/Apicurio/apicurio-registry/issues/8189","tags":["web"]},{"url":"https://github.com/Apicurio/apicurio-registry/pull/8200","tags":["web"]},{"url":"https://github.com/Apicurio/apicurio-registry/commit/03cd1cc081d9b1b4c8b9a59330ff4c980dc68b73","tags":["web"]},{"url":"https://github.com/Apicurio/apicurio-registry/commit/48369d0e9008f7aab16dce5970c1ecbdd55e9aa5","tags":["web"]},{"url":"https://github.com/Apicurio/apicurio-registry/releases/tag/3.3.1","tags":["web"]},{"url":"https://github.com/Apicurio/apicurio-registry/releases/tag/v3.2.6","tags":["web"]},{"url":"https://github.com/advisories/GHSA-748j-wm96-4wh5"},{"url":"https://github.com/apicurio/apicurio-registry","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-12993","title":"Apicurio/apicurio-registry: apicurio-registry: xml entity-expansion denial of service via internal dtd subset","description":"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.","status":"published","published":"2026-06-25T23:23:20.902Z","modified":"2026-11-06T04:08:27.577Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-776"],"updated_at":"2026-11-06T05:26:53.987177Z"}],"euvd":[{"id":"EUVD-2026-39593","description":"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.","status":"published","published":"2026-06-25T23:23:20Z","modified":"2026-11-06T04:08:27Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"updated_at":"2026-11-06T05:03:43.860299Z"}],"ghsa":[{"id":"GHSA-748j-wm96-4wh5","title":"Apicurio Registry is vulnerable to denial of service through XML entity expansion","description":"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.","status":"published","published":"2026-06-26T00:32:07Z","modified":"2026-11-04T18:12:09Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-776"],"updated_at":"2026-11-04T18:25:12.042189Z"}],"nvd":[{"id":"CVE-2026-12993","description":"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.","status":"published","published":"2026-06-26T00:16:50.76Z","modified":"2026-10-25T22:10:00.15Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-776"],"updated_at":"2026-11-02T14:12:26.045561Z"}],"osv":[{"id":"GHSA-748j-wm96-4wh5","title":"Apicurio Registry is vulnerable to denial of service through XML entity expansion","description":"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.","status":"published","published":"2026-06-26T00:32:07Z","modified":"2026-11-04T18:30:03.811147678Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-776"],"updated_at":"2026-11-04T18:44:42.651049Z"}]}}