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 issue.
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Fixes
Solution
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Workaround
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References
History
Thu, 06 Aug 2026 15:30:00 +0000
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cvssV3_1
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Thu, 06 Aug 2026 12:45:00 +0000
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Apache
Apache cxf |
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| Vendors & Products |
Apache
Apache cxf |
Thu, 06 Aug 2026 11:15:00 +0000
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| 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 issue. | |
| Title | Apache CXF: The authorization code hash (c_hash) is not enforced for the hybrid OIDC flow | |
| Weaknesses | CWE-20 | |
| References |
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Projects
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Status: PUBLISHED
Assigner: apache
Published:
Updated: 2026-08-06T15:07:59.276Z
Reserved: 2026-06-25T10:09:34.655Z
Link: CVE-2026-57817
Updated: 2026-08-06T15:07:55.351Z
No data.
No data.
OpenCVE Enrichment
Updated: 2026-08-06T17:00:11Z
Weaknesses