CVE Catalog

CVE-2026-90878

MediumCVSS 4.3
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.30%

23th percentile - higher than 23% of all known CVEs

Summary

A vulnerability was detected in vllm-project vLLM up to version 0.27.1. It affects an unknown part of /v1/chat/completions in the Jinja Template Rendering component. Manipulation of the chat_template argument causes resource consumption. The attack can be initiated remotely, and the exploit is public. A pull request to fix the issue awaits acceptance.

Risk Assessment

An attacker could cause system overload, potentially leading to denial of service (DoS) and disruption of services.

Recommendation

Monitor for patches and apply them once available. Temporarily restrict access to the endpoint or implement resource limits.

Related vulnerabilities

Original NVD description (English source)

A vulnerability was determined in vllm-project vLLM up to 0.27.1. This affects an unknown part of the file /v1/chat/completions of the component Jinja Template Rendering. This manipulation of the argument chat_template causes resource consumption. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. The pull request to fix this issue awaits acceptance.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS