AIKIDO-2026-61483
spring-security-oauth2-jose is vulnerable to Authentication Bypass
74
High Risk
This Affects:
spring-security-oauth2-joseTL;DR
spring-security-oauth2-jose stores processed DPoP proof jti values in a bounded cache to prevent replay. An attacker who intercepts a valid proof can flood the server with dummy requests until the legitimate jti is evicted. After eviction, the intercepted proof can be replayed, impersonating the victim. The patch keeps replay protection effective when the cache is under pressure.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and you use DPoPProofJwtDecoderFactory for DPoP proof validation.
Background info
spring-security-oauth2-jose is vulnerable to Authentication Bypass in versions 6.5.0 - 7.0.6 and 7.1.0 - 7.1.0.
How to fix this
Upgrade the org.springframework.security:spring-security-oauth2-jose library to the patch version.
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