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CVE-2026-86169

Axolotl before 0.19.0 Remote Code Execution via Multipack Patching

CVSS 4.0 8.7 HIGHCVSS 3.1 8.8 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-86169

Published

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.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-86169

Published

axolotl

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "axolotl-ai-cloud",
                    "product": "axolotl",
                    "defaultStatus": "unaffected",
                    "packageURL": "pkg:pypi/axolotl",
                    "versions": [
                        {
                            "version": "0",
                            "lessThan": "0.19.0",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "0.19.0",
                            "status": "unaffected",
                            "versionType": "semver"
                        }
                    ]
                }

Original source record · Cite this exact observation · Complete original publisher JSON