CVE-2025-46570: Potential Timing Side-Channel Vulnerability in vLLM’s Chunk-Based Prefix Caching
(updated )
This issue arises from the prefix caching mechanism, which may expose the system to a timing side-channel attack.
References
- github.com/advisories/GHSA-4qjh-9fv9-r85r
- github.com/pypa/advisory-database/tree/main/vulns/vllm/PYSEC-2025-53.yaml
- github.com/vllm-project/vllm
- github.com/vllm-project/vllm/commit/77073c77bc2006eb80ea6d5128f076f5e6c6f54f
- github.com/vllm-project/vllm/pull/17045
- github.com/vllm-project/vllm/security/advisories/GHSA-4qjh-9fv9-r85r
- nvd.nist.gov/vuln/detail/CVE-2025-46570
Code Behaviors & Features
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