8.1

CVE-2026-57817

Apache CXF: The authorization code hash (c_hash) is not enforced for the hybrid OIDC flow

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Apache ≫ Cxf Version < 3.6.12
Apache ≫ Cxf Version >= 4.0.0 < 4.1.8
Apache ≫ Cxf Version >= 4.2.0 < 4.2.3
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.44% 0.365
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
CISA-ADP 8.1 2.2 5.9
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE-20 Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

https://lists.apache.org/thread/pj63c3pf7kkp1xhr53do704fwj3t3htn
Vendor Advisory
Mailing List
http://www.openwall.com/lists/oss-security/2026/08/06/19