RCE in J6t Gitk
CVE-2025-27613
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.
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.003 (21.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 3.6 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N.
Affected products
- J6t Gitk — versions >= 1.7.0, < 2.43.7, >= 2.44.0, < 2.44.4, >= 2.45.0, < 2.45.4
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
- af854a3a-2127-422b-91ae-364da2661108
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2025-27613?
- CVE-2025-27613 is a low-severity vulnerability in J6t Gitk, classified under OS Command Injection. CVSS score: 3.6/10. Published 2025-07-10.
- How severe is CVE-2025-27613?
- Low severity. CVSS v3 base score is 3.6 out of 10.
- Is CVE-2025-27613 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.