CVE-2026-40999: Spring Web Services: SSRF via unvalidated WS-Addressing reply destinations

June 11, 2026 (updated August 21, 2026)

When WS-Addressing is used with non-anonymous ReplyTo or FaultTo addresses, Spring WS may initiate outbound connections through configured WebServiceMessageSender instances to destinations taken directly from request headers without verifying that those destinations are safe to connect to.

Affected versions: Spring Web Services 5.0.0 through 5.0.1; 4.1.0 through 4.1.3; 4.0.0 through 4.0.18; 3.1.0 through 3.1.8.

References

github.com/advisories/GHSA-whpp-xv3h-rwxf
github.com/spring-projects/spring-ws/commit/5121a4e545803c4925e63c4ed015391be2605ba5
nvd.nist.gov/vuln/detail/CVE-2026-40999
spring.io/security/cve-2026-40999

Code Behaviors & Features

Detect and mitigate CVE-2026-40999 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Learn more about Dependency Scanning →