CVE-2026-86169
Axolotl before 0.19.0 Remote Code Execution via Multipack Patching
- State
- Published
- Severity
- 8.7 High
- Published
- Sep 5, 2026
- Updated
- Sep 24, 2026
- Reserved
- Sep 5, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.7 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 8.8 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H | VulnCheck |
Weaknesses
- CWE-829 Inclusion of Functionality from Untrusted Control Sphere
Affected Products
| Product | Versions |
|---|---|
axolotlaxolotl-ai-cloud |
|
References
- Pull Request #3858patchissue-tracking
- Patch Commitpatch
- Multipack trust_remote_code guardtechnical-description
- patch_remote sinktechnical-description
- axolotl v0.19.0 Release Notesrelease-notes
- https://github.com/axolotl-ai-cloud/axolotlproduct
- VulnCheck Advisory: Axolotl through 0.18.0 Remote Code Execution via Multipack Patchingthird-party-advisory
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