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.
CVSS
No CVSS.
References
| Link | Resource |
|---|---|
| https://github.com/vllm-project/vllm/commit/77073c77bc2006eb80ea6d5128f076f5e6c6f54f | Patch |
| https://github.com/vllm-project/vllm/pull/17045 | Issue Tracking Vendor Advisory |
| https://github.com/vllm-project/vllm/security/advisories/GHSA-4qjh-9fv9-r85r | Vendor Advisory |
Configurations
History
24 Jun 2025, 18:25
| Type | Values Removed | Values Added |
|---|---|---|
| First Time |
Vllm vllm
Vllm |
|
| CWE | CWE-203 | |
| CPE | cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:* | |
| References | () https://github.com/vllm-project/vllm/pull/17045 - Issue Tracking, Vendor Advisory | |
| References | () https://github.com/vllm-project/vllm/commit/77073c77bc2006eb80ea6d5128f076f5e6c6f54f - Patch | |
| References | () https://github.com/vllm-project/vllm/security/advisories/GHSA-4qjh-9fv9-r85r - Vendor Advisory |
29 May 2025, 17:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-05-29 17:15
Updated : 2025-06-24 18:25
NVD link : CVE-2025-46570
Mitre link : CVE-2025-46570
JSON object : View
Products Affected
vllm
- vllm