CVE-2026-101060CWE-918ssrf

CVE-2026-101060

High · published September 27, 2026

CVSS v3.1
8.2
EPSS
0%
Percentile
7.4
In the wild
Unconfirmed
What it is

python-utcp versions before 1.1.4 contain a server-side request forgery vulnerability in HttpCommunicationProtocol.call_tool that validates the initial tool URL but follows HTTP redirects without re-validating the target. Attackers controlling a tool endpoint can return a 302 redirect to internal services, allowing the UTCP client to reach cloud metadata endpoints or internal HTTP services and return their response bodies to the caller.

The record
Technical detail
CVSS v3.1
8.2 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
CVSS v4.0
8.4 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N
EPSS
0.00182 · 7.4th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-09-27T22:16Z
References (3)
https://github.com/universal-tool-calling-protocol/python-utcp/security/advisories/GHSA-9qhg-99ww-9mqc · [email protected]https://www.vulncheck.com/advisories/python-utcp-before-1.1.4-ssrf-via-unvalidated-http-redirects · [email protected]https://github.com/universal-tool-calling-protocol/python-utcp/security/advisories/GHSA-9qhg-99ww-9mqc · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 29 SEP 03:24Z
    EPSS moved — → 0%
    epss
  • 27 SEP 17:02Z
    python-utcp before 1.1.4 SSRF via unvalidated HTTP redirects
    cvelistv5