Low [CVE-2026-57817] Authorization Code Substitution via missing c_hash validation
This low-severity Red Hat Linux advisory covers CVE-2026-57817 affecting Red Hat build of Apache Camel for Spring Boot 4, Red Hat JBoss Enterprise Application Platform 7, Red Hat JBoss Enterprise Application Platform Expansion Pack.
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Summary
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. Such an attack could lead to unauthorized access or session hijacking.
Red Hat severity: Low — CVSS 3.7 (CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N). Weakness: CWE-303.
Affected Red Hat products: Red Hat build of Apache Camel for Spring Boot 4; Red Hat JBoss Enterprise Application Platform 7; Red Hat JBoss Enterprise Application Platform Expansion Pack; Red Hat JBoss Web Server 5. Will not fix / out of support: Red Hat JBoss Enterprise Application Platform 7; Red Hat JBoss Web Server 5.
Red Hat does not currently list a fixing RHSA for this CVE.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
- 4.2.3
- 4.1.8
- 3.6.12
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
Mitigation
Upgrade to a fixed release: 4.2.3, 4.1.8, 3.6.12. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
Discussion(0)
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