Vulnerability · Published Sep 5, 2026 · Assigned by VulnCheck

CVE-2026-86169Axolotl before 0.19.0 Remote Code Execution via Multipack Patching

High 8.8

In plain English

A high-severity security flaw in axolotl from axolotl-ai-cloud. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 61% of all known vulnerabilities).

Severity (CVSS 3.1)8.8High

Exploit odds (30 days)0.9%top 38.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Axolotl before 0.19.0 contains a remote code execution vulnerability in the multipack patch path where trust_remote_code defaults to None instead of False, causing the security guard to be bypassed. Attackers can execute arbitrary Python code by crafting a malicious Hugging Face model repository selected as base_model, which is loaded with hardcoded trust_remote_code=True during AutoModelForCausalLM.from_pretrained.

Affected products (as reported)

Vendor	Product	Versions
axolotl-ai-cloud	axolotl	0 – before 0.19.0

Weakness: CWE-829 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References

Pull Request #3858 patch, issue-tracking
Patch Commit patch
Multipack trust_remote_code guard technical-description
patch_remote sink technical-description
axolotl v0.19.0 Release Notes release-notes
https://github.com/axolotl-ai-cloud/axolotl product
VulnCheck Advisory: Axolotl through 0.18.0 Remote Code Execution via Multipack Patching third-party-advisory