Description

A Spring MVC or Spring WebFlux application which configures a mapping for "/**" where the view name is not explicitly specified allows an attacker to craft a link resulting in a 302 redirect to an arbitrary external host via the redirect: prefix.

Spring MVC applications with the same preconditions also allow an attacker to craft a link resulting in an internal redirect via the forward: prefix.

Affected Spring Products and Versions

Spring Framework:

• 7.0.0 - 7.0.7
• 6.2.0 - 6.2.18
• 6.1.0 - 6.1.27
• 5.3.0 - 5.3.48

Versions that are no longer supported are also affected.

Mitigation

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

No further mitigation steps are necessary.

Credit

This issue was discovered internally.

References

• https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?vector=AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N&version=3.1

History

• 2026-06-08: Initial vulnerability report published.