CVE-2026-11623

Description

A security vulnerability has been detected in tmux up to 3.6a. Affected is the function image_free of the file image.c. Such manipulation leads to use after free. Local access is required to approach this attack. This attack is characterized by high complexity. The exploitability is told to be difficult. The exploit has been disclosed publicly and may be used. Upgrading to version 3.7-rc is able to address this issue. The name of the patch is fc6d94a9f8a593bd8b7031650802084385d4ee03. The affected component should be upgraded.

References

https://vuldb.com/vuln/369303/cti

https://vuldb.com/vuln/369303

https://vuldb.com/submit/835623

https://vuldb.com/cve/CVE-2026-11623

https://github.com/tmux/tmux/releases/tag/3.7-rc

https://github.com/tmux/tmux/commit/fc6d94a9f8a593bd8b7031650802084385d4ee03

https://github.com/tmux/tmux/

https://gist.github.com/XlabAITeam/f0d9952595f795129a3258ba73bbc3cb

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4

EPSS