kitty up to 0.40.x Executable File open_actions.py origin validation

Summaryinfo

A vulnerability, which was classified as problematic, was found in kitty up to 0.40.x. This vulnerability affects unknown code of the file open_actions.py of the component Executable File Handler. The manipulation results in origin validation. This vulnerability was named CVE-2025-43929. The attack may be performed from remote. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in kitty up to 0.40.x. Affected is some unknown functionality of the file open_actions.py of the component Executable File Handler. The manipulation with an unknown input leads to a origin validation vulnerability. CWE is classifying the issue as CWE-346. The product does not properly verify that the source of data or communication is valid. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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).

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2025-43929 since 04/20/2025. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 275968 (TencentOS Server 4: kitty (TSSA-2025:0486)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 0.41.0 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch ce5cfdd9caf44c538af800a07162e1f49bd53c35 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (275968) and EUVD (EUVD-2025-14660). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

• kitty

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11
• 0.12
• 0.13
• 0.14
• 0.15
• 0.16
• 0.17
• 0.18
• 0.19
• 0.20
• 0.21
• 0.22
• 0.23
• 0.24
• 0.25
• 0.26
• 0.27
• 0.28
• 0.29
• 0.30
• 0.31
• 0.32
• 0.33
• 0.34
• 0.35
• 0.36
• 0.37
• 0.38
• 0.39
• 0.40

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

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Once again VulDB remains the best source for vulnerability data.

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