High 7.5Published Oct 7, 2025

CVE-2025-59425vLLM vulnerable to timing attack at bearer auth

Updated under an hour ago (Oct 27, 2026, 9:40 AM ET)

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It affects vllm-project vllm and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for vllm-project vllm

Exploited in the last 30 days

vLLM is an inference and serving engine for large language models (LLMs). Before version 0.11.0rc2, the API key support in vLLM performs validation using a method that was vulnerable to a timing attack. API key validation uses a string comparison that takes longer the more characters the provided API key gets correct. Data analysis across many attempts could allow an attacker to determine when it finds the next correct character in the key sequence. Deployments relying on vLLM's built-in API key validation are vulnerable to authentication bypass using this technique. Version 0.11.0rc2 fixes the issue.

CVSS: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE): CWE-385
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Oct 7, 2025
First seen by InfoSec Signals: Oct 19, 2026

Affected products

Affected products

vllm-project vllm vllm_project:vllm (from the name)	before 0.11.0rc2	CNA record
vllm vllm vllm:vllm	before 0.11.0; 0.11.0	NVD

References

References

https://github.com/vllm-project/vllm/security/advisories/GHSA-wr9h-g72x-mwhm	x-refsource-confirm, exploit, vendor-advisory
https://github.com/vllm-project/vllm/commit/ee10d7e6ff5875386c7f136ce8b5f525c8fcef48	x-refsource-misc, patch
https://github.com/vllm-project/vllm/blob/4b946d693e0af15740e9ca9c0e059d5f333b1083/vllm/entrypoints/openai/api_server.py#L1270-L1274	x-refsource-misc, product
https://github.com/vllm-project/vllm/releases/tag/v0.11.0	x-refsource-misc, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.