Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Packages utcp-gql and utcp-websocket before 1.1.1 are affected by server-side request forgery. The GraphQL plugin uses a prefix URL check that hostnames such as 127.0.0.1.attacker.example can pass, and the WebSocket plugin performs no URL validation. An attacker who can get a client to register a malicious manual can direct requests to internal services and send configured API keys or tokens to an attacker-chosen host. Upgrade both packages to 1.1.1.
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 |
|---|---|---|---|---|
| 5.3 | Medium | 4.0 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P | CNA (VulDB) |
- CISA KEV Not listed.
- EPSS 0.0023, the 13th percentile, on 10 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:10 UTC First seen by agentprime
- 31 Oct 2026, 14:10 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-ppx3-28rw-8fpf
- OSV: GHSA-ppx3-28rw-8fpf
- github.com/universal-tool-calling-protocol/python-utcp/security/advisories/GHSA-ppx3-28rw-8fpf
- nvd.nist.gov/vuln/detail/CVE-2026-12210
- github.com/gola-leya/cve_submit/issues/1
- github.com/universal-tool-calling-protocol/python-utcp/issues/86
- github.com/universal-tool-calling-protocol/python-utcp/commit/fc3268e2a62e1181f91a63faf0a9bcee7639db29
- github.com/universal-tool-calling-protocol/python-utcp
- vuldb.com/cve/CVE-2026-12210
- vuldb.com/submit/832542
- vuldb.com/vuln/370852