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

MEDIUM | JUNE 09, 2026 | CVE-2026-41008

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 Spring Products and Versions

Spring Security:

  • 7.0.0 - 7.0.5

Spring Authorization Server:

  • 1.5.0 - 1.5.7

Mitigation

Users of affected versions should upgrade to the corresponding fixed version.

Affected version(s) Fix version Availability
7.0.x 7.0.6 OSS
1.5.x 1.5.8 OSS

Credit

The issue was identified and responsibly reported by Jon Kjennbakken of Vipps MobilePay.

References

Reporting a vulnerability

To report a security vulnerability for a project within the Spring portfolio, see the Security Policy

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