CVE-2026-105922
vllm-project vLLM Penalty utils.py get_token_bin_counts_and_mask denial of service
- State
- Published
- Severity
- 5.3 Medium
- Published
- Oct 6, 2026
- Updated
- Oct 6, 2026
- Reserved
- Oct 6, 2026
Description
A security flaw has been discovered in vllm-project vLLM up to 0.31.0. This impacts the function get_token_bin_counts_and_mask of the file vllm/model_executor/layers/utils.py of the component Penalty Handler. Performing a manipulation results in denial of service. Remote exploitation of the attack is possible. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
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:P | 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:P/RL:X/RC:C | 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:P/RL:X/RC:C | VulDB |
| 2.0 | 4.0 Medium | AV:N/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:C | VulDB |
Weaknesses
- CWE-404 Denial of Service
Affected Products
| Product | Versions |
|---|---|
vLLMvllm-project |
|
References
- VDB-413896 | vllm-project vLLM Penalty utils.py get_token_bin_counts_and_mask denial of servicevdb-entrytechnical-description
- VDB-413896 | CTI Indicators (IOB, IOC, TTP, IOA)signaturepermissions-required
- CVE-2026-105922 | CVE Analysis and Reportthird-party-advisory
- Submit #992707 | vLLM Project vLLM 0.27.1 Denial of Servicethird-party-advisory
- https://github.com/vllm-project/vllm/issues/57719issue-tracking
- https://gist.github.com/Yunzez/5c70a3bb328eaf6d646b9d31e879dc4a#file-repro_prompt_embeds_penalties_engine_crash-pyexploit
- https://github.com/vllm-project/vllm/product
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