Buffer overflow in Vllm
CVE-2026-56340
vLLM versions >= 0.10.2 and < 0.13.0 are missing sparse tensor validation in multimodal embeddings processing. Because PyTorch disables sparse tensor invariant checks by default, an attacker can submit crafted embedding requests with malfo…
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.004 (27.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Vllm — versions 0.10.2, 0.13.0
Weakness classification (CWE)
References
- GHSA Advisory GHSA-mcmc-2m55-j8jj (vendor-advisory, Vendor Advisory)
- VulnCheck Advisory: vLLM - Denial of Service via Unvalidated Multimodal Embeddings (Third Party Advisory, third-party-advisory)
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Frequently asked questions
- What is CVE-2026-56340?
- CVE-2026-56340 is a high-severity vulnerability in Vllm, classified under Improper Input Validation. CVSS score: 8.8/10. Published 2026-06-20.
- How severe is CVE-2026-56340?
- High severity. CVSS v3 base score is 8.8 out of 10.