CVE-2026-41008: Spring Security Authorization Server Open Redirect via request_uri

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-09 · updated 2026-07-23
Weakness: CWE-601

Description

Spring Security Authorization Server's authorization endpoint performs insufficient validation of the request_uri parameter. An attacker can craft a malicious authorization request containing an invalid request_uri and an arbitrary, unvalidated redirect_uri, which can lead to an Open Redirect vulnerability. Affected versions: Spring Security 7.0.0 through 7.0.5. Spring Authorization Server 1.5.0 through 1.5.7.

Affected products

Spring Authorization Server: from 1.5.0 before 1.5.7.1 — fixed in 1.5.7.1
Spring Security: from 7.0.0 before 7.0.5.1 — fixed in 7.0.5.1
Spring Authorization Server: from 1.5.0 before 1.5.7.1 — fixed in 1.5.7.1
Spring Security: from 7.0.0 before 7.0.5.1 — fixed in 7.0.5.1

How to fix

Upgrade to a fixed version: Spring Authorization Server 1.5.7.1; Spring Security 7.0.5.1; Spring Authorization Server 1.5.7.1; Spring Security 7.0.5.1. Check the vendor advisory for mitigations.

References

https://spring.io/security/cve-2026-41008

Get alerted when CVE-2026-41008 or the next vulnerability affects your stack