Uninitialized Resource Vulnerability in vllm by vllm-project
CVE-2026-7141

6.3MEDIUM

Key Information:

Vendor

vllm-project

Status
Vllm
Vendor
CVE Published:
27 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-7141?

A vulnerability was identified in the vllm library, affecting versions up to 0.19.0, specifically within the has_mamba_layers function of the KV Block Handler component. This issue stems from uninitialized resources, which could potentially enable remote exploitation. Although the complexity of carrying out an attack is high, the exploitability has been publicly disclosed. A patch has been introduced, allowing users to mitigate this vulnerability effectively.

Affected Version(s)

vllm 0.1

vllm 0.2

vllm 0.3

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-7141 - Proof of Concept

References

https://vuldb.com/vuln/359740
vdb-entrytechnical-description
https://vuldb.com/vuln/359740/cti
signaturepermissions-required
https://vuldb.com/submit/801297
third-party-advisory

CVSS V4

Score:
6.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Zyz3366 (VulDB User)
.