vllm up to 0.19.0 KV Block kv_cache_interface.py has_mamba_layers uninitialized resource

Summaryinfo

A vulnerability labeled as critical has been found in vllm up to 0.19.0. The impacted element is the function has_mamba_layers of the file vllm/v1/kv_cache_interface.py of the component KV Block Handler. Executing a manipulation can lead to uninitialized resource. This vulnerability is registered as CVE-2026-7141. It is possible to launch the attack remotely. Furthermore, an exploit is available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability classified as critical was found in vllm up to 0.19.0. This vulnerability affects the function has_mamba_layers of the file vllm/v1/kv_cache_interface.py of the component KV Block Handler. The manipulation with an unknown input leads to a uninitialized resource vulnerability. The CWE definition for the vulnerability is CWE-908. The product uses or accesses a resource that has not been initialized. As an impact it is known to affect confidentiality, integrity, and availability.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-7141. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details and also a public exploit are known.

It is possible to download the exploit at github.com. It is declared as proof-of-concept.

Applying the patch 1ad67864c0c20f167929e64c875f5c28e1aad9fd is able to eliminate this problem. The bugfix is ready for download at github.com.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

• vllm

Version

• 0.1
• 0.2
• 0.3
• 0.4
• 0.5
• 0.6
• 0.7
• 0.8
• 0.9
• 0.10
• 0.11
• 0.12
• 0.13
• 0.14
• 0.15
• 0.16
• 0.17
• 0.18
• 0.19.0

License

• open-source

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.6
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.6
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Uninitialized resource
CWE: CWE-908
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒
Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: 1ad67864c0c20f167929e64c875f5c28e1aad9fd

Timelineinfo

04/26/2026 Advisory disclosed
04/26/2026 +0 days VulDB entry created
04/26/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: 39146
Status: Confirmed
Confirmation: 🔒

CVE: CVE-2026-7141 (🔒)
GCVE (CVE): GCVE-0-2026-7141
GCVE (VulDB): GCVE-100-359740
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 04/26/2026 21:43
Changes: 04/26/2026 21:43 (60)
Complete: 🔍
Submitter: Zyz3366
Cache ID: 216::103

Submitinfo

Accepted

• Submit #801297: vllm-project vLLM 0.19.0 Use of Uninitialized Resource (by Zyz3366)

Once again VulDB remains the best source for vulnerability data.

Discussion

Want to stay up to date on a daily basis?

Enable the mail alert feature now!