PT-2026-40123 · Llm · Llm

Published 2026-05-12 · Updated 2026-05-12 · CVE-2026-31236

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions llm versions prior to 0.27.2

Description A code injection issue exists in the llm CLI tool. The tool uses the unsafe exec() function to process custom Python function definitions provided through the --functions command-line argument without sanitization, sandboxing, or security restrictions. An attacker can exploit this by tricking a user into executing a malicious command containing arbitrary Python code in the --functions argument, leading to arbitrary code execution on the system.

Recommendations Update to version 0.27.2 or later. As a temporary workaround, avoid using the --functions argument with untrusted input.

Fix

Code Injection

Weakness Enumeration

CWE-94

Related Identifiers

CVE-2026-31236

GHSA-G76P-4VG5-F4QH

Affected Products

Llm

References · 10

• https://security-tracker.debian.org/tracker/CVE-2026-31236 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2026-31236 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-31236 · Security Note
• https://osv.dev/vulnerability/GHSA-g76p-4vg5-f4qh · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2026-31236 · Security Note
• https://ubuntu.com/security/CVE-2026-31236 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2026-31236 · Vendor Advisory
• https://github.com/simonw/llm/security/advisories/GHSA-g52p-p8pm-jjw6 · Note
• https://github.com/simonw/llm · Note
• https://notion.so/CVE-2026-31236-35d1e139318881a4a0f1fffcf671f7e3 · Note