CVE-2026-59316

Summary

Spring Authorization Server's default consent page renders user-controlled values without HTML entity encoding. When using the DefaultConsentPage, an attacker can craft an OAuth2 authorization request containing a malicious value that is stored server-side and later rendered unencoded in the default consent page presented to the end user. Spring Authorization Server 1.5.0 - 1.5.8 Spring Authorization Server 1.4.0 - 1.4.11

Affected Software

VendorProductVersion RangeStatus
SpringSpring Authorization Server1.5.0 <= 1.5.8affected
SpringSpring Authorization Server1.4.0 <= 1.4.11affected

Weaknesses

  • CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

References