Bug 2548461 (CVE-2026-71575)

Summary: CVE-2026-71575 org.apache.cxf/cxf-rt-rs-security-sso-oidc: Apache CXF: Re-authentication bypass via improper session freshness check
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: csutherl, dsoumis, fmariani, gmalinko, janstey, jclere, jwon, mcarlett, pdelbell, pjindal, plodge, rmaucher, rstepani, szappis, tcunning, yfang
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Apache CXF. The authentication freshness verification mechanism in the OpenID Connect (OIDC) client filter fails to properly evaluate session age due to a unit mismatch and flawed comparison logic. A remote attacker with a stale or expired session can exploit this issue to bypass re-authentication and step-up authentication requirements, maintaining unauthorized access to protected resources.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description OSIDB Bzimport 2026-10-09 10:31:47 UTC
The max_age authentication-freshness check in OidcClientCodeRequestFilter was inoperative due to a milliseconds/seconds unit mismatch and an inverted comparison polarity. Any relying party using setMaxAgeOffset to enforce re-authentication would silently accept sessions of any age, bypassing step-up authentication policies. Users are recommended to upgrade to versions 4.2.4 or 4.1.9 or 3.6.13, which fix this issue.