Vulnerability · Published Aug 27, 2026 · Assigned by vmware

CVE-2026-59316Spring Authorization Server Default Consent Page is vulnerable to Cross-Site Scripting (XSS)

High 8.2

In plain English

A high-severity cross-site scripting in Spring Authorization Server from Spring. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 25% of all known vulnerabilities).

Severity (CVSS 3.1)8.2High

Exploit odds (30 days)0.3%top 75.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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 (as reported)

Vendor	Product	Versions
Spring	Spring Authorization Server	1.5.0 – through 1.5.81.4.0 – through 1.4.11

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N

References

https://spring.io/security/cve-2026-59316