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CVE-2025-48956

vLLM API endpoints vulnerable to Denial of Service Attacks

Published: Aug 21, 2025Updated: Oct 9, 2025 Sources: CVE List NVD GHSA BDUCWE-400
7.5HIGH
NVD MITRE
EPSS Score
0.6%
Top 56.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-400

Affected Products

vllm-project
oss-projectaka vllm-project/vllm, vllm
vllmMixed
AI / ML / llm-serving-inference
PyPI
package-ecosystem
vllm
OSS Libraries
vllm
oss-projectaka aibrix
vllmMixed
AI / ML / llm-serving-inference
vLLM Project
oss-projectaka vllm
vLLMMixed
AI / ML / llm-serving-inference

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://github.com/vllm-project/vllm/security/advisories/GHSA-rxc4-3w6r-4v47
github.com
https://github.com/vllm-project/vllm/pull/23267
github.com
https://github.com/vllm-project/vllm/commit/d8b736f913a59117803d6701521d2e4861701944
github.com
and 7 more references View all →

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