{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-50627: Apache CXF: OAuth2: Missing JWT Audience and Issuer Validation in Access Token Validator","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-50627","status":"final","version":"1","initial_release_date":"2026-06-12T08:55:41.657Z","current_release_date":"2026-06-15T19:28:36.208Z","revision_history":[{"date":"2026-06-12T08:55:41.657Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"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, which fixes this issue.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-50627 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-50627"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-50627"},{"category":"external","summary":"lists.apache.org","url":"https://lists.apache.org/thread/0jfzz9q992957b99tw7hodcqjfyxwb1m"}]},"product_tree":{"branches":[{"category":"vendor","name":"Apache Software Foundation","branches":[{"category":"product_name","name":"Apache CXF","branches":[{"category":"product_version_range","name":">=4.2.0 <4.2.2","product":{"name":"Apache Software Foundation Apache CXF >=4.2.0 <4.2.2","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:apache_software_foundation:apache_cxf:*:*:*:*:*:*:*:*"}}},{"category":"product_version_range","name":"<4.1.7","product":{"name":"Apache Software Foundation Apache CXF <4.1.7","product_id":"CSAFPID-2","product_identification_helper":{"cpe":"cpe:2.3:a:apache_software_foundation:apache_cxf:*:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-50627","title":"Apache CXF: OAuth2: Missing JWT Audience and Issuer Validation in Access Token Validator","notes":[{"category":"description","text":"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, which fixes this issue.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1","CSAFPID-2"]},"scores":[{"cvss_v3":{"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"},"products":["CSAFPID-1","CSAFPID-2"]}],"remediations":[{"category":"vendor_fix","details":"Update to a fixed version: 4.1.7, 4.2.2.","product_ids":["CSAFPID-1","CSAFPID-2"]}]}]}