Description

Gitk is a Tcl/Tk based Git history browser. Starting with 1.7.0, when a user clones an untrusted repository and runs gitk without additional command arguments, files for which the user has write permission can be created and truncated. The option Support per-file encoding must have been enabled before in Gitk's Preferences. This option is disabled by default. The same happens when Show origin of this line is used in the main window (regardless of whether Support per-file encoding is enabled or not). 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 2.50.1.

Classification

CVE ID: CVE-2025-27613

CVSS Base Severity: LOW

CVSS Base Score: 3.6

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

Affected Products

Vendor: j6t

Product: gitk

References

https://nvd.nist.gov/vuln/detail/CVE-2025-27613
https://github.com/j6t/gitk/security/advisories/GHSA-f3cw-xrj3-wr2v
https://github.com/j6t/gitk/compare/465f03869ae11acd04abfa1b83c67879c867410c..026c397d911cde55924d7eb1311d0fd6e2e105d5
https://github.com/j6t/gitk/compare/7dd272eca153058da2e8d5b9960bbbf0b4f0cbaa..67a128b91e25978a15f9f7e194d81b441d603652

Timeline