CVE-2026-41838: Spring Framework Predictable Session ID in WebSocket Module
(updated )
IDs for WebSocket sessions in the spring-websocket module are not cryptographically unpredictable, which may be possible to exploit in combination with inadequate authorization rules.
Affected versions: Spring Framework 7.0.0 through 7.0.7; 6.2.0 through 6.2.18; 6.1.0 through 6.1.27; 5.3.0 through 5.3.48.
References
- github.com/advisories/GHSA-q723-847q-5g8g
- github.com/spring-projects/spring-framework/commit/a42a6e0c6ac64eb18954729ca5e3fe64b05a39b5
- github.com/spring-projects/spring-framework/commit/bff98999056fc29b573ff47ad2433462eb52833c
- github.com/spring-projects/spring-framework/issues/36740
- github.com/spring-projects/spring-framework/releases/tag/v6.2.19
- github.com/spring-projects/spring-framework/releases/tag/v7.0.8
- nvd.nist.gov/vuln/detail/CVE-2026-41838
- spring.io/security/cve-2026-41838
Code Behaviors & Features
Detect and mitigate CVE-2026-41838 with GitLab Dependency Scanning
Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Dependency Scanning using SBOM also detects vulnerabilities from proprietary advisories that this site does not include. Learn more about Dependency Scanning using SBOM →