Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
The utcp-cli package before 1.1.2 is vulnerable to command injection. Its argument substitution inserts tool argument values into shell commands without escaping, so an attacker who can supply tool arguments can run arbitrary shell commands on the host, potentially gaining remote code execution. Upgrade to utcp-cli 1.1.2 or later, which shell-quotes substituted values; note that tools relying on one placeholder expanding to multiple arguments must be changed.
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 |
|---|---|---|---|---|
| 8.3 | High | 3.1 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0032, the 25th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 15:04 UTC First seen by agentprime
- 31 Oct 2026, 15:04 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-33p6-5jxp-p3x4
- OSV: GHSA-33p6-5jxp-p3x4
- github.com/universal-tool-calling-protocol/python-utcp/security/advisories/GHSA-33p6-5jxp-p3x4
- nvd.nist.gov/vuln/detail/CVE-2026-45369
- github.com/universal-tool-calling-protocol/python-utcp
- pypi.org/project/utcp-cli
- github.com/advisories/GHSA-33p6-5jxp-p3x4