CVE-2026-90878
vllm-project vLLM Jinja Template Rendering completions resource consumption
CVSS Score
4.3
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-400 CWE-404 |
| Vendor | vllm-project |
| Product | vllm |
| Published | Sep 15, 2026 |
| Last Updated | Sep 15, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
vllm-project / vLLM
0.27.0 0.27.1
References
vuldb.com: https://vuldb.com/vuln/403472 vuldb.com: https://vuldb.com/vuln/403472/cti vuldb.com: https://vuldb.com/cve/CVE-2026-90878 vuldb.com: https://vuldb.com/submit/927901 github.com: https://github.com/vllm-project/vllm/issues/52025 github.com: https://github.com/vllm-project/vllm/pull/52163 github.com: https://github.com/vllm-project/vllm/
Credits
🔍 Zyz3366 (VulDB User) VulDB CNA Team