CVE-2026-79623: FishCodeTech Muteki Default Local Worker Backend settings.json os command injection
A security vulnerability has been detected in FishCodeTech Muteki up to 0.2.5. The affected element is an unknown function of the file .claude/settings.json of the component Default Local Worker Backend. The manipulation leads to os command injection. The attack can be initiated remotely. The exploit has been disclosed publicly and may be used. The issue was closed with the comment (translated from Chinese): "The project will be refactored and shut down."
Affected Software
Event History
Frequently Asked Questions
What access does an attacker need to exploit this issue?
The vulnerability is remotely exploitable and requires low privileges. No user interaction is required according to the supplied CVSS vector.
Which deployments are known to be affected?
FishCodeTech Muteki versions up to 0.2.5 are affected in the Default Local Worker Backend component. The vulnerable configuration file is .claude/settings.json.
Is public exploit information available?
Yes. The exploit has been publicly disclosed and may be used.
What mitigation is available if patching is not possible?
No patch or workaround is provided in the available information. The issue was closed with a statement that the project will be refactored and shut down.