GHSA-pmqf-x6x8-p7qw
Suggest an improvement- Source
- https://github.com/advisories/GHSA-pmqf-x6x8-p7qw
- Import Source
- https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/11/GHSA-pmqf-x6x8-p7qw/GHSA-pmqf-x6x8-p7qw.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/GHSA-pmqf-x6x8-p7qw
- Aliases
- Published
- 2025-11-20T21:23:29Z
- Modified
- 2025-11-21T18:46:16.447102Z
- Severity
-
- 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- 8.3 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H CVSS Calculator
- Summary
- vLLM vulnerable to DoS with incorrect shape of multimodal embedding inputs
- Details
-
Summary
Users can crash the vLLM engine serving multimodal models by passing multimodal embedding inputs with correct
ndimbut incorrectshape(e.g. hidden dimension is wrong), regardless of whether the model is intended to support such inputs (as defined in the Supported Models page).The issue has existed ever since we added support for image embedding inputs, i.e. #6613 (released in v0.5.5)
Details
Using image embeddings as an example:
- For models that support image embedding inputs, the engine crashes when scattering the embeddings to
inputs_embeds(mismatched shape) - For models that don't support image embedding inputs, the engine crashes when validating the inputs inside
get_input_embeddings(validation fails).
This happens because we only validate
ndimof the tensor, but not the full shape, in input processor (viaMultiModalDataParser).Impact
- Denial of service by crashing the engine
Mitigation
- Use API key to limit access to trusted users.
- Set
--limit-mm-per-promptto 0 for all non-text modalities to ban multimodal inputs, which includes multimodal embedding inputs. However, the model would then only accept text, defeating the purpose of using a multi-modal model.
Resolution
- https://github.com/vllm-project/vllm/pull/27204
- For models that support image embedding inputs, the engine crashes when scattering the embeddings to
- Database specific
{ "nvd_published_at": "2025-11-21T02:15:43Z", "cwe_ids": [ "CWE-129" ], "github_reviewed_at": "2025-11-20T21:23:29Z", "severity": "HIGH", "github_reviewed": true }- References
-
- https://github.com/vllm-project/vllm/security/advisories/GHSA-pmqf-x6x8-p7qw
- https://nvd.nist.gov/vuln/detail/CVE-2025-62372
- https://github.com/vllm-project/vllm/pull/27204
- https://github.com/vllm-project/vllm/pull/6613
- https://github.com/vllm-project/vllm/commit/58fab50d82838d5014f4a14d991fdb9352c9c84b
- https://github.com/vllm-project/vllm
Affected packages
PyPI / vllm
Package
- Name
- vllm
- View open source insights on deps.dev
- Purl
- pkg:pypi/vllm