CVE-2026-79623
FishCodeTech Muteki Default Local Worker Backend settings.json os command injection
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."
INFO
Published Date :
Aug. 25, 2026, 2:16 p.m.
Last Modified :
Aug. 27, 2026, 5:20 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] | ||||
| CVSS 4.0 | LOW | [email protected] |
Solution
- Monitor project status for refactoring completion.
- Await official project shutdown announcement.
- Evaluate alternative solutions if needed.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-79623.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-79623 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-79623
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-79623 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-79623 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
Aug. 27, 2026
Action Type Old Value New Value Added Reference https://github.com/FishCodeTech/muteki/ Added Reference https://github.com/FishCodeTech/muteki/issues/7 Added Reference https://github.com/micr0softDrestlife/muteki_vul_report Added Reference https://vuldb.com/cve/CVE-2026-79623 Added Reference https://vuldb.com/submit/887095 Added Reference https://vuldb.com/vuln/394962 Added Reference https://vuldb.com/vuln/394962/cti Removed Reference https://github.com/FishCodeTech/muteki/ Removed Reference https://github.com/FishCodeTech/muteki/issues/7 Removed Reference https://github.com/micr0softDrestlife/muteki_vul_report Removed Reference https://vuldb.com/cve/CVE-2026-79623 Removed Reference https://vuldb.com/submit/887095 Removed Reference https://vuldb.com/vuln/394962 Removed Reference https://vuldb.com/vuln/394962/cti -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 27, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-79623', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'poc'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-08-27T13:28:11.466990Z'} -
New CVE Received by [email protected]
Aug. 25, 2026
Action Type Old Value New Value Added Affected [{'cpes': ['cpe:2.3:a:fishcodetech:muteki:*:*:*:*:*:*:*:*'], 'vendor': 'FishCodeTech', 'modules': ['Default Local Worker Backend'], 'product': 'Muteki', 'versions': [{'status': 'affected', 'version': '0.2.0'}, {'status': 'affected', 'version': '0.2.1'}, {'status': 'affected', 'version': '0.2.2'}, {'status': 'affected', 'version': '0.2.3'}, {'status': 'affected', 'version': '0.2.4'}, {'status': 'affected', 'version': '0.2.5'}]}] Added 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." Added CVSS V4.0 AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L Added CVSS V2 (AV:N/AC:L/Au:S/C:P/I:P/A:P) Added CWE CWE-78 Added CWE CWE-77 Added Reference https://github.com/FishCodeTech/muteki/ Added Reference https://github.com/FishCodeTech/muteki/issues/7 Added Reference https://github.com/micr0softDrestlife/muteki_vul_report Added Reference https://vuldb.com/cve/CVE-2026-79623 Added Reference https://vuldb.com/submit/887095 Added Reference https://vuldb.com/vuln/394962 Added Reference https://vuldb.com/vuln/394962/cti