CVE-2026-45370

Published: May 14, 2026Modified: Jun 17, 2026Deferred

7.7

Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Exploitability: 3.1 / Impact: 4.0

Source: security-advisories@github.com (Secondary)

Description

python-utcp is the python implementation of UTCP. Prior to 1.1.3, _prepare_environment() in cli_communication_protocol.py passes a full copy of os.environ to every CLI subprocess. When combined with CVE-2026-45369, an attacker can exfiltrate all process-level secrets in a single tool call. This vulnerability is fixed in 1.1.3.

Related CWEs

CWE-526

Cleartext Storage of Sensitive Information in an Environment Variable

The product uses an environment variable to store unencrypted sensitive information.

References (2)

https://github.com/universal-tool-calling-protocol/python-utcp/security/advisories/GHSA-5v57-8rxj-3p2r

Source: security-advisories@github.com

https://github.com/universal-tool-calling-protocol/python-utcp/security/advisories/GHSA-5v57-8rxj-3p2r

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

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