Resource exhaustion in Vllm
CVE-2025-48956
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 HTT…
Vulnerability class: DoS (Denial of Service)
EPSS: 0.005 (41.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Vllm
- Vllm-project Vllm — versions >= 0.1.0, < 0.10.1.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC, Issue Tracking)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2025-48956?
- CVE-2025-48956 is a high-severity vulnerability in Vllm, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2025-08-21.
- How severe is CVE-2025-48956?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2025-48956 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.