What’s Vulnerable › Vulnerabilities

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

• Severity: medium (CVSS 6.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-25 · updated 2026-08-27
• Weakness: CWE-77

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

• FishCodeTech Muteki: 0.2.0, 0.2.1, 0.2.2, 0.2.3, 0.2.4, 0.2.5

References

• https://github.com/FishCodeTech/muteki/
• https://github.com/FishCodeTech/muteki/issues/7
• https://github.com/micr0softDrestlife/muteki_vul_report
• https://vuldb.com/cve/CVE-2026-79623
• https://vuldb.com/submit/887095
• https://vuldb.com/vuln/394962
• https://vuldb.com/vuln/394962/cti

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