CVE-2025-43929: kitty — Exploit & Fix

Description

open_actions.py in kitty before 0.41.0 does not ask for user confirmation before running a local executable file that may have been linked from an untrusted document (e.g., a document opened in KDE ghostwriter).

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CVSS v3.1 Score

4.1

MEDIUM

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

Weakness Type (CWE)

CWE-346 CWE-346

Affected Products

Vendor	Product	Versions
kovidgoyal	kitty	< 0.41.0

References

Advisories & Patches

https://github.com/kovidgoyal/kitty/commit/ce5cfdd9caf44c538af800a07162e1f49bd53c35 https://github.com/kovidgoyal/kitty/compare/v0.40.1...v0.41.0

Exploits

https://github.com/0xBenCantCode/CVE-2025-43929 https://hitman.services/cve-2025-43929/

Other References

https://ghostwriter.kde.org/documentation/#links

Frequently Asked Questions

What is CVE-2025-43929? +

open_actions.py in kitty before 0.41.0 does not ask for user confirmation before running a local executable file that may have been linked from an untrusted document (e.g., a document opened in KDE ghostwriter). It has a CVSS v3.1 base score of 4.1 (MEDIUM).

How severe is CVE-2025-43929? +

CVE-2025-43929 has a CVSS v3.1 score of 4.1 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-43929? +

CVE-2025-43929 affects products from kovidgoyal, specifically: kitty. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-43929? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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