CVE-2026-85673

LLaMA-Factory contains a server-side request forgery vulnerability in the OpenAI-compatible API multimodal media URL handler that allows unauthenticated attackers to bypass SSRF validation. The check_ssrf_url guard validates URLs once but requests.get follows redirects and re-resolves DNS without re-validation, enabling attackers to use HTTP redirects or DNS rebinding to access internal addresses and cloud metadata endpoints.

Score

CVSS 4.0 8.7 High

Status

Deferred - disclosure@vulncheck.com

Published

2026-09-04

Last modified

2026-09-04

Weaknesses

CWE-918

Affected products

• Llama-factory (Hiyouga)

References

• https://github.com/hiyouga/LlamaFactory
• https://github.com/hiyouga/LlamaFactory/blob/v0.9.5/src/llamafactory/api/chat.py
• https://github.com/hiyouga/LlamaFactory/blob/v0.9.5/src/llamafactory/api/common.py
• https://github.com/hiyouga/LlamaFactory/issues/10646
• https://www.vulncheck.com/advisories/llama-factory-ssrf-guard-bypass-via-redirect-and-dns-rebinding