CVE-2026-90878
mediumA vulnerability was determined in vllm-project vLLM up to 0.27.1.
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.
CVSS
4.3
4.3 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L Severity source: NVD CVSS v3.1 (cna@vuldb.com)
Timeline (UTC)
Published: 2026-09-15 05:16
Modified: 2026-09-15 14:37
NVD status: Deferred
Last synced 1 day ago
Verified against the source API 2026-10-27 06:53 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/vllm-project/vllm/ cna@vuldb.com
- https://github.com/vllm-project/vllm/issues/52025 cna@vuldb.com
- https://github.com/vllm-project/vllm/pull/52163 cna@vuldb.com
- https://vuldb.com/cve/CVE-2026-90878 cna@vuldb.com
- https://vuldb.com/submit/927901 cna@vuldb.com
- https://vuldb.com/vuln/403472 cna@vuldb.com
- https://vuldb.com/vuln/403472/cti cna@vuldb.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:53 UTC · record ↗