CVE 9.8 CRITICAL

CVE-2026-31236_CVE-2026-31236

May 14, 2026 invoker category_cve

9.8 / 10

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

The llm CLI tool thru 0.27.1 contains a critical code injection vulnerability via its --functions command-line argument. This argument is intended to allow users to provide custom Python function definitions. However, the tool directly executes the provided code using the unsafe exec() function without any sanitization, sandboxing, or security restrictions. An attacker can exploit this by crafting a malicious llm command with arbitrary Python code in the --functions argument and using social engineering to trick a victim into running it. This leads to arbitrary code execution on the victim's system, potentially granting the attacker full control.

AI Analysis

Critical code injection vulnerability in llm CLI tool via --functions command-line argument

Basic Information

ID CVE-2026-31236

Source mitre

Published May 12, 2026 at 00:00

Modified May 14, 2026 at 19:54

Affected Product

Vendor simonw

Product llm

Version 0.27.1

Affected Versions n/a n/a n/a

CWE Classification

CWE-94

AI Assessment

AI Score 9.8 / 10

AI Severity Critical

Vendor simonw

Product llm

Version 0.27.1

References

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    "published": "2026-05-12T00:00:00.000Z",
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