CVE-2026-25960 SSRF Protection Bypass in vLLM
Attackers can bypass SSRF protections in vLLM by exploiting inconsistent URL parsing between validation and request libraries, potentially accessing internal resources.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-25960?
CVE-2026-25960 is a high-severity server-side request forgery vulnerability in Vllm Vllm, published on 9 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
vLLM is an inference and serving engine for large language models (LLMs). The SSRF protection fix for CVE-2026-24779 add in 0.15.1 can be bypassed in the load_from_url_async method due to inconsistent URL parsing behavior between the validation layer and the actual HTTP client. The SSRF fix uses urllib3.util.parse_url() to validate and extract the hostname from user-provided URLs. However, load_from_url_async uses aiohttp for making the actual HTTP requests, and aiohttp internally uses the yarl library for URL parsing. This vulnerability in 0.17.0.
Which versions are affected by CVE-2026-25960?
3 open source packages ship an affected version, including vllm. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
vllm PyPI | From 0.15.1 | 0.17.0 |
vllm PyPI | From 0.15.1 | 0.17.0 |
vllm PyPI | From 0.15.1 | 0.17.0 |
Products include Vllm Vllm.
How do I fix CVE-2026-25960?
Upgrade vllm to 0.17.0 or later.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-25960 being exploited?
There is no known exploitation of CVE-2026-25960 in the wild and no public exploit code.
Other vulnerabilities in Vllm Vllm
- CVE-2025-32444 vLLM Vulnerable to Remote Code Execution via Mooncake Integration
- CVE-2026-22778 vLLM leaks a heap address when PIL throws an error
- CVE-2025-47277 vLLM Allows Remote Code Execution via PyNcclPipe Communication Service
- CVE-2024-11041 Remote Code Execution in vllm-project/vllm
- CVE-2026-48746 vLLM: OpenAI auth bypass
Sources
Also known as GHSA-v359-jj2v-j536, PYSEC-2026-3411.