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CVE-2025-48944

vLLM Tool Schema allows DoS via Malformed pattern and type Fields

Published: May 30, 2025Updated: Jul 1, 2025 Sources: CVE List NVD GHSA BDUCWE-20
6.5MEDIUM
NVD MITRE
EPSS Score
0.4%
Top 63.1%
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). In version 0.8.0 up to but excluding 0.9.0, the vLLM backend used with the /v1/chat/completions OpenAPI endpoint fails to validate unexpected or malformed input in the "pattern" and "type" fields when the tools functionality is invoked. These inputs are not validated before being compiled or parsed, causing a crash of the inference worker with a single request. The worker will remain down until it is restarted. Version 0.9.0 fixes the issue.

No summary for this CVE yet.

CVSS Vector Breakdown

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

CWE-20

Affected Products

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

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Initial Access
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References

https://github.com/vllm-project/vllm/security/advisories/GHSA-vrq3-r879-7m65
github.com
https://github.com/vllm-project/vllm/pull/17623
github.com
https://github.com/vllm-project/vllm/pull/17623
github.com
and 5 more references View all →

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