Spring Framework Predictable Session ID in WebSocket Module
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.
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Java / Kotlin (Maven) | org.springframework:spring-websocket | >= 7.0.0, < 7.0.8, >= 6.2.0, < 6.2.19, >= 6.1.0, <= 6.1.27, <= 5.3.48 | 7.0.8, 6.2.19 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-41838
- https://github.com/spring-projects/spring-framework/issues/36740
- https://github.com/spring-projects/spring-framework/commit/a42a6e0c6ac64eb18954729ca5e3fe64b05a39b5
- https://github.com/spring-projects/spring-framework/commit/bff98999056fc29b573ff47ad2433462eb52833c
- https://github.com/spring-projects/spring-framework
- https://github.com/spring-projects/spring-framework/releases/tag/v6.2.19
- https://github.com/spring-projects/spring-framework/releases/tag/v7.0.8
- https://spring.io/security/cve-2026-41838
- CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N- Weakness (CWE)
CWE-330- Platform
- Java / Kotlin (Maven)
- Package
org.springframework:spring-websocket- Disclosed
- 09.06.2026
- Updated
- 11.10.2026 12:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-q723-847q-5g8g - CC BY 4.0
Vulnerability history: org.springframework:spring-websocket
All published vulnerabilities of this package (Java / Kotlin (Maven)), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 2
- First → latest
- 10.2025 06.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Medium 2
Disclosures per year
- 2025: 1
- 2026: 1
-
Spring Framework Predictable Session ID in WebSocket Module this entry
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