Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
The spring-websocket package is affected in versions 6.2.0 to before 6.2.12, 6.1.0 through 6.1.21, 6.0.0 through 6.0.23, and 5.3.39 and earlier. A security bypass in STOMP over WebSocket applications lets an attacker send unauthorized messages, and the source gives few details on the conditions required. Upgrade to 6.2.12 or a later fixed version.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 4.3 | Medium | 3.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N | CNA (vmware) |
- CISA KEV Not listed.
- EPSS 0.0031, the 24th percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:17 UTC First seen by agentprime
- 31 Oct 2026, 14:17 UTC Confirmed by OSV