CVE-2026-59316: Broadcom Spring Authorization Server

High severity, CVSS 8.2. EPSS: 0.3% chance of exploitation in the next 30 days.

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 products

• Broadcom Spring Authorization Server: from 1.4.0, before 1.4.12 (fixed in 1.4.12); from 1.5.0, before 1.5.9 (fixed in 1.5.9)

Published 2026-08-27. Last modified 2026-08-31.