What is CVE-2026-59316?

CVE-2026-59316 is a high-severity vulnerability in Spring Authorization Server, classified under CWE-79 IMPROPER NEUTRALIZATION OF INPUT DURING WEB PAGE GENERATION ('CROSS-SITE SCRIPTING'). CVSS score: 8.2/10. Published 2026-08-27.

How severe is CVE-2026-59316?

High severity. CVSS v3 base score is 8.2 out of 10.

Vulnerability in Spring Authorization Server

CVE-2026-59316

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

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N.

Affected products

Spring Authorization Server

References

security@vmware.com

Frequently asked questions

What is CVE-2026-59316?: CVE-2026-59316 is a high-severity vulnerability in Spring Authorization Server, classified under CWE-79 IMPROPER NEUTRALIZATION OF INPUT DURING WEB PAGE GENERATION ('CROSS-SITE SCRIPTING'). CVSS score: 8.2/10. Published 2026-08-27.
How severe is CVE-2026-59316?: High severity. CVSS v3 base score is 8.2 out of 10.