Andyyyy64 whichllm up to 0.5.15 Hub API cli.py Script Generation code injection

Summaryinfo

A vulnerability identified as critical has been detected in Andyyyy64 whichllm up to 0.5.15. This vulnerability affects the function Script Generation of the file cli.py of the component Hub API. The manipulation leads to code injection. This vulnerability is referenced as CVE-2026-58474. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in Andyyyy64 whichllm up to 0.5.15 and classified as critical. This issue affects the function Script Generation of the file cli.py of the component Hub API. The manipulation with an unknown input leads to a code injection vulnerability. Using CWE to declare the problem leads to CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

whichllm before 0.5.16 contains a code injection vulnerability in the run and snippet commands that allows a remote attacker who controls a HuggingFace repository to achieve arbitrary code execution by crafting a malicious GGUF filename containing double quotes or other special characters. The script generation function in cli.py interpolates HuggingFace-derived values, including GGUF variant filenames from the Hub API siblings rfilename field, directly into Python source code without escaping, allowing the crafted filename to break out of the generated string literal and execute injected code on the user's machine before any model download occurs.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-58474 since 06/30/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059 according to MITRE ATT&CK.

Upgrading to version 0.5.16 eliminates this vulnerability.

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Productinfo

Vendor

• Andyyyy64

Name

• whichllm

Version

• 0.5.0
• 0.5.1
• 0.5.2
• 0.5.3
• 0.5.4
• 0.5.5
• 0.5.6
• 0.5.7
• 0.5.8
• 0.5.9
• 0.5.10
• 0.5.11
• 0.5.12
• 0.5.13
• 0.5.14
• 0.5.15

Website

• Product: https://github.com/Andyyyy64/whichllm/

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