CVE-2026-90878

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 v3 4.3 MEDIUM
CVSS v2.0 4.0 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

4.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:S/C:N/I:N/A:P

Exploitability : 8.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://github.com/vllm-project/vllm/
https://github.com/vllm-project/vllm/issues/52025
https://github.com/vllm-project/vllm/pull/52163
https://vuldb.com/cve/CVE-2026-90878
https://vuldb.com/submit/927901
https://vuldb.com/vuln/403472
https://vuldb.com/vuln/403472/cti

Configurations

No configuration.

History

No history.

Information

Published : 2026-09-15 05:16

Updated : 2026-09-15 14:37

NVD link : CVE-2026-90878

Mitre link : CVE-2026-90878

CVE.ORG link : CVE-2026-90878

JSON object : View

Products Affected

No product.

CWE

CWE-400

Uncontrolled Resource Consumption

CWE-404

Improper Resource Shutdown or Release

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