vLLM introduced enhanced protection for CVE-2025-62164
Summary
The fix here for CVE-2025-62164 is not sufficient. The fix only disables prompt embeds by default rather than addressing the root cause, so the DoS vulnerability remains when the feature is enabled.
Details
vLLM's pending change attempts to fix the root cause, which is the missing sparse tensor validation. PyTorch (~v2.0) disables sparse tensor validation (specifically, sparse tensor invariants checks) by default for performance reasons. vLLM is adding the sparse tensor validation to ensure indices are valid, non-negative, and within bounds. These checks help catch malformed tensors.
PoC
NA
Impact
Current fix only added a flag to disable/enable prompt embeds, so by default, prompt embeds feature is disabled in vLLM, which stops DoS attacks through the embeddings. However, It doesn’t address the problem when the flag is enabled and there is still potential for DoS attacks.
Changes
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Python (PyPI) | vllm | >= 0.10.2, < 0.13.0 | 0.13.0 |
Referencias
- https://github.com/vllm-project/vllm/security/advisories/GHSA-mcmc-2m55-j8jj
- https://www.vulncheck.com/advisories/vllm-denial-of-service-via-unvalidated-multimodal-embeddings
- https://github.com/vllm-project/vllm/pull/30649
- https://access.redhat.com/security/cve/CVE-2026-56340
- https://bugzilla.redhat.com/show_bug.cgi?id=2491060
- https://github.com/pypa/advisory-database/tree/main/vulns/vllm/PYSEC-2026-250.yaml
- https://github.com/vllm-project/vllm
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-56340.json
- Vector CVSS
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H- Debilidad (CWE)
CWE-123, CWE-20, CWE-502, CWE-787- Plataforma
- Python (PyPI)
- Paquete
vllm- Publicada
- 08.01.2026
- Actualizado
- 11.10.2026 15:18
Fuentes y licencias
OSV / GitHub Advisory Database - PYSEC-2026-250 - PyPA Advisory Database; CC BY 4.0
OSV / GitHub Advisory Database - GHSA-mcmc-2m55-j8jj - CC BY 4.0
Historial de vulnerabilidades: vllm
Todas las vulnerabilidades publicadas de este paquete (Python (PyPI)), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.
- Entradas en total
- 94
- Primera → última
- 09.2024 10.2026
- Sin corrección
- 5
- Explotada en ataques
- 0
Distribución por gravedad
- Crítica 9
- Alta 23
- Media 47
- Baja 4
- Sin evaluar 11
Divulgaciones por año
- 2024: 2
- 2025: 30
- 2026: 62
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vLLM introduced enhanced protection for CVE-2025-62164 esta entrada
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