CVE-2026-85673: SSRF (CVSS 7.5)

Description

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.

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CVSS v3.1 Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS — Exploit Prediction

0.0038

Probability of exploitation

0.32%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-918 Server-Side Request Forgery (SSRF)

References

Other 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 https://github.com/hiyouga/LlamaFactory/issues/10646

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-85673? +

CVE-2026-85673 has a CVSS v3.1 score of 7.5 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0038, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-85673? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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