Apache OIDC max_age Auth Check Bug in OidcClientCodeRequestFilter (4.2.4+ fix)
CVE-2026-71575 Published on October 9, 2026
Apache CXF: Inoperative max_age authentication-freshness check in OidcClientCodeRequestFilter
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.
Vulnerability Analysis
CVE-2026-71575 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality and integrity, and no impact on availability.
Weakness Type
Insufficient Session Expiration
According to WASC, "Insufficient Session Expiration is when a web site permits an attacker to reuse old session credentials or session IDs for authorization."
Products Associated with CVE-2026-71575
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Affected Versions
Apache Software Foundation Apache CXF:- Version 4.2.0 and below 4.2.4 is affected.
- Version 4.0.0 and below 4.1.9 is affected.
- Before 3.6.13 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.