{"cve":{"cve_id":"CVE-2026-57817","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.00449,"epss_percentile":0.3728,"epss_as_of":"2026-08-26","description":"The OpenID Connect Core 1.0 specification mandates that the RP MUST validate the `c_hash` parameter when operating in the Hybrid Flow. If an Apache CXF RP is integrated with a non-compliant or misconfigured Identity Provider (IdP) that omits the `c_hash`, the RP becomes vulnerable to Authorization Code Substitution/Injection attacks. Users are recommended to upgrade to versions 4.2.3 or 4.1.8 or 3.6.12, which fix this 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CXF","version_start":"0","version_start_inclusive":true,"version_end":"3.6.12","version_end_inclusive":false,"cpe23_uri":"cve5:apache-software-foundation:apache-cxf:0:3.6.12"}],"exploit_refs":[],"news":[],"references":[{"url":"https://lists.apache.org/thread/pj63c3pf7kkp1xhr53do704fwj3t3htn","source_type":"MAILING_LIST","tags":["mailing-list"]}],"timeline":[{"type":"published","at":"2026-08-06T10:24:05.877000Z","label":"CVE published","source":null},{"type":"ssvc_changed","at":"2026-08-06T15:41:38.302512Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-08-06T15:41:38.302512Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"ssvc_changed","at":"2026-08-06T15:41:38.302512Z","label":"SSVC decision revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-08-06T15:41:38.302512Z","label":"CVSS score revised","source":"vulnrichment"},{"type":"cvss_changed","at":"2026-08-06T15:41:38.302512Z","label":"CVSS score 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