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
HIGH
Vulnerability intelligence
CVE-2026-59316
CVSS 3.18.2
SeverityHigh
Known exploitedNo
NVD references:
Primary source: NIST National Vulnerability Database