CVE-2026-101060
python-utcp before 1.1.4 SSRF via unvalidated HTTP redirects
- State
- Published
- Severity
- 8.4 High
- Published
- Sep 27, 2026
- Updated
- Sep 28, 2026
- Reserved
- Sep 27, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.4 High | 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 | VulnCheck |
| 3.1 | 8.2 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N | VulnCheck |
Weaknesses
- CWE-918 Server-Side Request Forgery (SSRF)
Affected Products
| Product | Versions |
|---|---|
python-utcpuniversal-tool-calling-protocol |
|
References
- GitHub Security Advisory (GHSA-9qhg-99ww-9mqc)vendor-advisory
- VulnCheck Advisory: python-utcp before 1.1.4 SSRF via unvalidated HTTP redirectsthird-party-advisory
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