Is CVE-2026-25960 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-25960 being exploited in the wild.

How severe is CVE-2026-25960?

High severity, with a CVSS score of 7.1, published 9 March 2026.

Which products and versions are affected?

vllm (PyPI) ECOSYSTEM:introduced=0.15.1,fixed=0.17.0.

Is there a fix for CVE-2026-25960?

Yes. vllm (PyPI): upgrade to 0.17.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-25960 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-25960?

Check whether you run vllm (PyPI) or Vllm at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-25960: vLLM SSRF protection bypass in MediaConnector via URL parsing inconsistency

CVE-2026-25960 · Severity: high · CVSS 7.1 · Published 2026-03-09

vLLM is a high-throughput engine for serving large language models. A security flaw in how it handles web addresses allows an attacker to bypass safety filters and force the server to connect to unintended internal or external systems. This could lead to the exposure of sensitive internal data or unauthorized access to private services within the corporate network.

Technologies: vllm (PyPI), Vllm. Vendors: PyPI, Vllm.

Quick answers

Is CVE-2026-25960 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-25960 being exploited in the wild.
How severe is CVE-2026-25960?: High severity, with a CVSS score of 7.1, published 9 March 2026.
Which products and versions are affected?: vllm (PyPI) ECOSYSTEM:introduced=0.15.1,fixed=0.17.0.
Is there a fix for CVE-2026-25960?: Yes. vllm (PyPI): upgrade to 0.17.0 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-25960 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-25960?: Check whether you run vllm (PyPI) or Vllm at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

vllm (PyPI): upgrade to 0.17.0 or later
```
pip install "vllm>=0.17.0"
```

Technical details

A Server-Side Request Forgery (SSRF) bypass exists in vLLM's 'load_from_url_async' function within 'vllm/connections.py'. The vulnerability stems from a differential in how the 'urllib3' library (used for validation) and the 'yarl' library (used by 'aiohttp' for the actual request) parse backslashes in URLs. Specifically, 'urllib3' treats a backslash as part of the path, while 'yarl' may interpret it as part of the userinfo component, allowing an attacker to provide a URL that passes hostname allowlist checks but resolves to a different, malicious host during execution. This allows authenticated users to perform SSRF attacks against internal or external services. The issue is fixed in version 0.17.0.

Affected products

vllm-project vllm >= 0.15.1, < 0.17.0

Identifiers

CVE-2026-25960
GHSA-v359-jj2v-j536
PYSEC-2026-3411

Timeline

2026-03-09: disclosed
2026-03-09: advisory
2026-03-09: patched: Fixed in version 0.17.0

References

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