CVE-2026-27735

Description

Model Context Protocol Servers is a collection of reference implementations for the model context protocol (MCP). In mcp-server-git versions prior to 2026.1.14, the git_add tool did not validate that file paths provided in the files argument were within the repository boundaries. Because the tool used GitPythons repo.index.add() rather than the Git CLI, relative paths containing ../ sequences that resolve outside the repository were accepted and staged into the Git index. Users are advised to upgrade to 2026.1.14 or newer to remediate this issue.

Risk Information

Base Score

8.6

MODERATE

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C

EPSS Score

Exploitation Probability

0.09

Associated Vulnerability

Vulnerability	OS Platform
Vulnerabilities CVE-2026-27735 are fixed in Python-mcp-server-git 2026.1.14	Windows
Vulnerabilities CVE-2026-27735 are fixed in Python-mcp-server-git for linux 2026.1.14	Linux

Patch Details

No records found

References

https://nvd.nist.gov/vuln/detail/CVE-2023-1234
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-1234