Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
The PyPI package aws-mcp, versions 1.7.0 and earlier, is vulnerable to command injection in how it handles its allowed commands list. A remote attacker who does not need to authenticate can supply a crafted string that is used in a system call without proper validation, which lets them run arbitrary code in the context of the MCP server. No fixed version is listed in the source, so no upgrade target is available from this record.
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 |
|---|---|---|---|---|
| 9.8 | Critical | 3.0 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | CNA (zdi) |
- CISA KEV Not listed.
- EPSS 0.018, the 79th percentile, on 15 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:07 UTC First seen by agentprime
- 31 Oct 2026, 14:07 UTC Confirmed by OSV