Vulnerability in Axolotl-Ai-Cloud Axolotl
CVE-2026-86169
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.009 (60.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 60.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.009 · change: +0.004
Affected products
Weakness classification (CWE)
References
- github.com/axolotl-ai-cloud/axolotl (product)
- github.com/axolotl-ai-cloud/axolotl/blob/v0.18.0/src/axolotl/loaders/patch_mana… (technical-description)
- github.com/axolotl-ai-cloud/axolotl/blob/v0.18.0/src/axolotl/monkeypatch/multip… (technical-description)
- github.com/axolotl-ai-cloud/axolotl/commit/b62d60b101eea7f32532ee3c0b17c2f2430a… (patch)
- github.com/axolotl-ai-cloud/axolotl/pull/3858 (issue-tracking, patch)
- www.vulncheck.com/advisories/axolotl-through-0.18.0-remote-code-execution-via-m… (third-party-advisory)
- github.com/axolotl-ai-cloud/axolotl/releases/tag/v0.19.0 (release-notes)
Frequently asked questions
- What is CVE-2026-86169?
- CVE-2026-86169 is a high-severity vulnerability in Axolotl-Ai-Cloud Axolotl, classified under Inclusion of Functionality from Untrusted Control Sphere. CVSS score: 8.8/10. Published 2026-09-05.
- How severe is CVE-2026-86169?
- High severity. CVSS v3 base score is 8.8 out of 10.