CVE-2026-63687
Apache CXF's JwtRequestCodeFilter copies all claims from a signed request JWT into the authorization parameter map without excluding securit
CVSS
9.1
Crítico
EPSS
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KEV
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Exploit Today
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0-100
Publicado: 6 ago 2026 · Última mod.: 6 ago 2026 · CWE-345
Sin historial EPSS suficiente todavía.
Apache CXF's JwtRequestCodeFilter copies all claims from a signed request JWT into the authorization parameter map without excluding security-sensitive parameters. A client that can produce a validly-signed request JWT (e.g., one whose client_secret is known or compromised) can thereby substitute the code_challenge, code_challenge_method, nonce, and state values that were set in the outer HTTP request, undermining PKCE integrity and OpenID Connect replay protection. Users are recommended to upgrade to versions 4.2.3 or 4.1.8 or 3.6.12, which fix this issue.
CVECVSSEPSSKEVRExplotTítuloVis.
CVE-2026-655839.1 CRÍ—
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