What is CVE-2026-90553?

CVE-2026-90553 is a high-severity vulnerability in Vllm-Project Vllm, classified under Code Injection. CVSS score: 7.8/10. Published 2026-09-12.

How severe is CVE-2026-90553?

High severity. CVSS v3 base score is 7.8 out of 10.

RCE in Vllm-Project Vllm

CVE-2026-90553

vLLM before 0.28.0 contains a remote code execution vulnerability in the LlavaOnevision2 processor loader that ignores the trust_remote_code parameter when loading remote processor classes. Attackers can craft a malicious model with arbitrary code in processing_llava_onevision2.py that executes with vLLM process authority even when trust_remote_code is set to False.

Vulnerability class: RCE (Remote Code Execution)

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

Affected products

Vllm-project Vllm

Weakness classification (CWE)

CWE-94 — Code Injection

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-90553?: CVE-2026-90553 is a high-severity vulnerability in Vllm-Project Vllm, classified under Code Injection. CVSS score: 7.8/10. Published 2026-09-12.
How severe is CVE-2026-90553?: High severity. CVSS v3 base score is 7.8 out of 10.