CVE-2026-41838: VMware Spring Framework

High severity, CVSS 7.5. EPSS: 0.3% chance of exploitation in the next 30 days.

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 products

• VMware Spring Framework: from 5.3.0, before 5.3.49 (fixed in 5.3.49); from 6.1.0, before 6.1.28 (fixed in 6.1.28); from 6.2.0, before 6.2.18.1 (fixed in 6.2.18.1); from 7.0.0, before 7.0.7.1 (fixed in 7.0.7.1)

Published 2026-06-09. Last modified 2026-07-23.