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Vulnerability · Published Aug 25, 2026 · Assigned by VulDB

CVE-2026-79623FishCodeTech Muteki Default Local Worker Backend settings.json os command injection

Medium 6.3

In plain English

A medium-severity OS command injection in Muteki from FishCodeTech. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.8% (higher than 79% of all known vulnerabilities).

Severity (CVSS 3.1)6.3Medium
Exploit odds (30 days)1.8%top 21.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

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 products (as reported)

VendorProductVersions
FishCodeTech Muteki 0.2.00.2.10.2.20.2.30.2.40.2.5

Weakness: CWE-78, CWE-77 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

References