CVE-2026-92365

vllm-project vllm thinking_budget_state.py algorithmic complexity

State: Published
Severity: 5.3 Medium
Published: Sep 16, 2026
Updated: Sep 22, 2026
Reserved: Sep 16, 2026

Description

A vulnerability was found in vllm-project vllm up to 0.29.0. Affected by this issue is some unknown functionality of the file vllm/v1/sample/thinking_budget_state.py. The manipulation results in inefficient algorithmic complexity. It is possible to launch the attack remotely. The pull request to fix this issue awaits acceptance.

Scores

CVSS	Score	Vector	Source
4.0	5.3 Medium	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X	VulDB
3.1	4.3 Medium	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:X/RL:X/RC:R	VulDB
3.0	4.3 Medium	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:X/RL:X/RC:R	VulDB
2.0	4.0 Medium	AV:N/AC:L/Au:S/C:N/I:N/A:P/E:ND/RL:ND/RC:UR	VulDB

Weaknesses

CWE-407 Inefficient Algorithmic Complexity
CWE-404 Denial of Service

Affected Products

Product	Versions
vllmvllm-project	0.1Affected 0.2Affected 0.3Affected 0.4Affected 0.5Affected 0.6Affected 0.7Affected 0.8Affected 0.9Affected 0.10Affected 0.11Affected 0.12Affected 0.13Affected 0.14Affected 0.15Affected 0.16Affected 0.17Affected 0.18Affected 0.19Affected 0.20Affected 0.21Affected 0.22Affected 0.23Affected 0.24Affected 0.25Affected and 4 more versions

References

VDB-405451 | vllm-project vllm thinking_budget_state.py algorithmic complexityvdb-entry
VDB-405451 | CTI Indicators (IOB, IOC, TTP, IOA)signaturepermissions-required
CVE-2026-92365 | CVE Analysis and Reportthird-party-advisory
Submit #935016 | vLLM Project vLLM >=0.26.0 Inefficient Algorithmic Complexitythird-party-advisory
https://github.com/vllm-project/vllm/pull/51133issue-trackingpatch
https://github.com/vllm-project/vllm/product

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