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Vulnerability details

CVE-2026-58474

Andyyyy64 whichllm

whichllm < 0.5.16 Code Injection via run and snippet commands

CVSS 4.0
8.6High

Official description

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.

CVSS scores

ScoreVersionSourceVector
8.6High 4.0 CVEProject cvelistV5 (CNA) (VulnCheck) CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.8High 3.1 CVEProject cvelistV5 (CNA) (VulnCheck) CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

VendorProductVersionsSource
Andyyyy64 whichllm v < 0.5.16 CVEProject cvelistV5 (CNA)

References and advisories

4
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Details

Published
2026-08-26
Last updated
2026-08-29
State
Published
Assigner (CNA)
VulnCheck

Exploit prediction (EPSS)

0.85%
Probability of exploitation in 30 days
58.6%
Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable
No
Exploitation
None
Technical impact
Total

Weaknesses (CWE)

  • CWE-94
    Improper Control of Generation of Code ('Code Injection')