CVE-2025-59425
Last modified
CVE-2025-59425 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 0.54% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Vllm | Vllm | < 0.11.0 | — |
| Vllm | Vllm | 0.11.0 | Rc1 |
References
- https://github.com/vllm-project/vllm/security/advisories/GHSA-wr9h-g72x-mwhmExploit, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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