Staging Environment: Content and features may be unstable or change without notice.
Advisory details: pypa / vllm/PYSEC-2026-2306
Advisory ID pypa/vllm/PYSEC-2026-2306
Aliases CVE-2026-7141
GHSA-x368-4g9h-fvv4
PYSEC-2026-2306
Summary 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.
Status Published
Exploitability 0.5
Weighted Severity 2.6
Risk 1.3
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (0)
There are no known CWE.
System Score Found at
cvssv4 2.9 https://github.com/pypa/advisory-database/blob/main/vulns/vllm/PYSEC-2026-2306.yaml
Reference id Reference type URL
1ad67864c0c20f167929e64c875f5c28e1aad9fd Other https://github.com/AjAnubolu/vllm/commit/1ad67864c0c20f167929e64c875f5c28e1aad9fd
359740 Advisory https://vuldb.com/vuln/359740
39146 Bug https://github.com/vllm-project/vllm/issues/39146
39146#issue-4215090365 Bug https://github.com/vllm-project/vllm/issues/39146#issue-4215090365
39283 Bug https://github.com/vllm-project/vllm/pull/39283
801297 Advisory https://vuldb.com/submit/801297
cti Other https://vuldb.com/vuln/359740/cti
GHSA-x368-4g9h-fvv4 https://github.com/advisories/GHSA-x368-4g9h-fvv4
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Found at https://github.com/pypa/advisory-database/blob/main/vulns/vllm/PYSEC-2026-2306.yaml
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

Vector: SSVCv2/E:P/A:N/T:P/P:M/B:A/M:M/D:T/2026-04-27T17:41:12Z/

Decision: Track

Source URL: https://github.com/cisagov/vulnrichment/blob/develop/2026/7xxx/CVE-2026-7141.json

Source Advisory: vulnrichment/CVE-2026-7141

View SSVC decision tree 
[{'Exploitation': 'poc'},
 {'Automatable': 'no'},
 {'Technical Impact': 'partial'},
 {'Mission Prevalence': 'minimal'},
 {'Public Well-being Impact': 'material'},
 {'Mission & Well-being': 'medium'}]