A vulnerability was found in vllm up to 0.19.0. The affected element is the function has_mamba_layers of the file vllm/v1/kv_cache_interface.py of the component KV Block Handler. Performing a manipulation results in uninitialized resource. It is possible to initiate the attack remotely. The attack is considered to have high complexity. The exploitability is described as difficult. The exploit has been made public and could be used. The patch is named 1ad67864c0c20f167929e64c875f5c28e1aad9fd. To fix this issue, it is recommended to deploy a patch.

Attack Vector Network

Attack Complexity High

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Access Vector Network

Access Complexity High

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
n/a vllm affected
Version Status Constraints
0.1 affected —
0.2 affected —
0.3 affected —
0.4 affected —
0.5 affected —
0.6 affected —
0.7 affected —
0.8 affected —
0.9 affected —
0.10 affected —
0.11 affected —
0.12 affected —
0.13 affected —
0.14 affected —
0.15 affected —
0.16 affected —
0.17 affected —
0.18 affected —
0.19.0 affected —

No data.

No data.

No data.

Project Subscriptions

Vendors Products
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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/AjAnubolu/vllm/commit/1ad67864c0c20f167929e64c875f5c28e1aad9fd cve-icon cve-icon
https://github.com/vllm-project/vllm/issues/39146 cve-icon cve-icon
https://github.com/vllm-project/vllm/issues/39146#issue-4215090365 cve-icon cve-icon
https://github.com/vllm-project/vllm/pull/39283 cve-icon cve-icon
https://vuldb.com/submit/801297 cve-icon cve-icon
https://vuldb.com/vuln/359740 cve-icon cve-icon
https://vuldb.com/vuln/359740/cti cve-icon cve-icon
History

Mon, 27 Apr 2026 17:15:00 +0000

Type Values Removed Values Added
Description A vulnerability was found in vllm up to 0.19.0. The affected element is the function has_mamba_layers of the file vllm/v1/kv_cache_interface.py of the component KV Block Handler. Performing a manipulation results in uninitialized resource. It is possible to initiate the attack remotely. The attack is considered to have high complexity. The exploitability is described as difficult. The exploit has been made public and could be used. The patch is named 1ad67864c0c20f167929e64c875f5c28e1aad9fd. To fix this issue, it is recommended to deploy a patch.
Title vllm KV Block kv_cache_interface.py has_mamba_layers uninitialized resource
First Time appeared Vllm
Vllm vllm
Weaknesses CWE-908
CPEs cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:*
Vendors & Products Vllm
Vllm vllm
References
Metrics cvssV2_0

{'score': 5.1, 'vector': 'AV:N/AC:H/Au:N/C:P/I:P/A:P/E:POC/RL:OF/RC:C'}

cvssV3_0

{'score': 5.6, 'vector': 'CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C'}

cvssV3_1

{'score': 5.6, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C'}

cvssV4_0

{'score': 6.3, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-04-27T17:41:17.930Z

Reserved: 2026-04-26T19:38:00.529Z

Link: CVE-2026-7141

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-04-27T17:16:45.637

Modified: 2026-04-27T17:16:45.637

Link: CVE-2026-7141

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses