CVE-2025-48956 – Apache vLLM HTTP Header DoS Vulnerability

CVE ID : CVE-2025-48956

Published : Aug. 21, 2025, 3:15 p.m. | 57 minutes ago

Description : vLLM is an inference and serving engine for large language models (LLMs). From 0.1.0 to before 0.10.1.1, a Denial of Service (DoS) vulnerability can be triggered by sending a single HTTP GET request with an extremely large header to an HTTP endpoint. This results in server memory exhaustion, potentially leading to a crash or unresponsiveness. The attack does not require authentication, making it exploitable by any remote user. This vulnerability is fixed in 0.10.1.1.

Severity: 7.5 | HIGH

Visit the link for more details, such as CVSS details, affected products, timeline, and more…