vLLMGHSA-x368-4g9h-fvv4
vLLM makes Use of Uninitialized Resource
Low5.6CVE-2026-7141 · Published Apr 27, 2026 · updated Sep 10, 2026
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.
Affected versions
| Package | Affected | Fixed in |
|---|---|---|
| vllm PyPI | < 0.19.1 | 0.19.1 |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
- Severity from
- GitHub (reviewed advisory)
- Weakness
- CWE-908
- Also known as
- CVE-2026-7141, PYSEC-2026-2306
- nvd.nist.gov/vuln/detail/CVE-2026-7141
- github.com/vllm-project/vllm/issues/39146
- github.com/vllm-project/vllm/issues/39146#issue-4215090365
- github.com/vllm-project/vllm/pull/39283
- github.com/AjAnubolu/vllm/commit/1ad67864c0c20f167929e64c875f5c28e1aad9fd
- vuldb.com/submit/801297
- vuldb.com/vuln/359740
- vuldb.com/vuln/359740/cti
More vLLM advisories
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|---|---|---|---|
| May 26 | vllm has Improper Resource Shutdown or Release Medium5.3May 26 | Medium5.3 | No fix yet |
| May 6 | vLLM: extract_hidden_states speculative decoding crashes server on any request with penalty parametersMedium6.5May 6 | Medium6.5 | 0.20.0 |
| May 5 | vLLM Vulnerable to Remote DoS via Special-Token PlaceholdersMedium6.5May 5 | Medium6.5 | 0.20.0 |
| Apr 3 | vLLM: Denial of Service via Unbounded Frame Count in video/jpeg Base64 ProcessingMedium6.5Apr 3 | Medium6.5 | 0.19.0 |
| Apr 3 | vLLM: Server-Side Request Forgery (SSRF) in `download_bytes_from_url `Medium5.4Apr 3 | Medium5.4 | 0.19.0 |
| Apr 3 | vLLM: Unauthenticated OOM Denial of Service via Unbounded `n` Parameter in OpenAI API ServerMedium6.5Apr 3 | Medium6.5 | 0.19.0 |