{"identifier":"CVE-2026-50627","cve":{"id":"CVE-2026-50627","description":"The JwtAccessTokenValidator class in Apache CXF fails to validate the 'aud' (Audience) claims of incoming JWT access tokens. This allows a JWT issued for one Resource Server to be successfully replayed against a completely different Resource Server, leading to Token Confusion/Routing attacks. Users are recommended to upgrade to versions 4.2.2 or 4.1.7 or 3.6.12, which fixes this issue.","published":"2026-06-12T10:16:22.587000+00:00","modified":"2026-10-26T11:10:00.157000+00:00","status":"Modified","score":9.1,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","cvss_version":"3.1","affected":[{"criteria":"cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:*","versionStartIncluding":"","versionStartExcluding":"","versionEndIncluding":"","versionEndExcluding":"4.1.7"},{"criteria":"cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2.0","versionStartExcluding":"","versionEndIncluding":"","versionEndExcluding":"4.2.2"}],"weaknesses":["CWE-289","CWE-303"],"references":[{"url":"https://lists.apache.org/thread/0jfzz9q992957b99tw7hodcqjfyxwb1m","source":"security@apache.org","tags":["Vendor Advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2026/06/11/4","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mailing List","Third Party Advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2026:37390","source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/security/cve/CVE-2026-50627","source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2488298","source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-50627.json","source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}],"kev":null,"kev_checked":true,"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","baseScore":9.1,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.3,"impactScore":6.0},{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","baseScore":9.1,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.3,"impactScore":6.0},{"source":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N","baseScore":8.1,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":5.2}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-06-15T18:31:53.486235Z","id":"CVE-2026-50627","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:*","versionEndExcluding":"4.1.7","matchCriteriaId":"C0505632-D713-4EFC-B857-12EBD5C3DF33"},{"vulnerable":true,"criteria":"cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:*","versionStartIncluding":"4.2.0","versionEndExcluding":"4.2.2","matchCriteriaId":"B1BF06FC-96AD-4663-9959-1B1493D4A2A0"}]}]}],"source":"nvd","retrieved_at":"2026-10-28T10:25:31.169899+00:00","exploited":false,"kev_stale":false,"products":["apache / cxf"],"priority":{"label":"Critical technical severity","reasons":["CVSS is at least 9.0; exploitation is not established by severity alone."]},"epss":{"probability":0.04524,"percentile":0.91504,"date":"2026-10-28","stale":false},"version_assessment":null},"news":[],"campaigns":[],"domains":[{"domain":"lists.apache.org","source_url":"https://lists.apache.org/thread/0jfzz9q992957b99tw7hodcqjfyxwb1m","investigate_url":"https://investigate.aeglixmind.com/#lists.apache.org"},{"domain":"www.openwall.com","source_url":"http://www.openwall.com/lists/oss-security/2026/06/11/4","investigate_url":"https://investigate.aeglixmind.com/#www.openwall.com"},{"domain":"access.redhat.com","source_url":"https://access.redhat.com/errata/RHSA-2026:37390","investigate_url":"https://investigate.aeglixmind.com/#access.redhat.com"},{"domain":"bugzilla.redhat.com","source_url":"https://bugzilla.redhat.com/show_bug.cgi?id=2488298","investigate_url":"https://investigate.aeglixmind.com/#bugzilla.redhat.com"},{"domain":"security.access.redhat.com","source_url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-50627.json","investigate_url":"https://investigate.aeglixmind.com/#security.access.redhat.com"}],"arsenal_url":"https://arsenal.aeglixmind.com/?cve=CVE-2026-50627","catalog_url":"https://cves.aeglixmind.com/cve/CVE-2026-50627","research_url":"https://investigate.aeglixmind.com/research/cve/CVE-2026-50627","coverage":{"news_candidates_checked":0,"campaign_candidates_checked":0,"bounded":false,"notice":"Exact CVE mentions in stored public excerpts and reviewed campaign content only. A mention is not proof of exploitation, attribution or tool suitability. Missing matches do not establish absence."}}