Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
LangBot, affected through version 4.10.5 (PyPI package langbot; no fixed version is listed), lets any authenticated user run arbitrary operating system commands on the server by adding an STDIO-type MCP server with a chosen command in the MCP configuration. An attacker who can sign up or log in, including with stolen credentials, can take full control of the host. No fix is listed; the source gives no workaround.
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 |
|---|---|---|---|---|
| 8.8 | High | 3.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0072, the 54th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:41 UTC First seen by agentprime
- 31 Oct 2026, 14:41 UTC Confirmed by OSV