CVE ID : CVE-2025-46570
Published : May 29, 2025, 5:15 p.m. | 4 hours, 18 minutes ago
Description : vLLM is an inference and serving engine for large language models (LLMs). Prior to version 0.9.0, when a new prompt is processed, if the PageAttention mechanism finds a matching prefix chunk, the prefill process speeds up, which is reflected in the TTFT (Time to First Token). These timing differences caused by matching chunks are significant enough to be recognized and exploited. This issue has been patched in version 0.9.0.
Severity: 2.6 | LOW
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