Medium severity · published Oct 6, 2026
CVE-2026-105922
vllm-project vLLM Penalty utils.py get_token_bin_counts_and_mask denial of service
4.3
CVSS
0.3%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 24% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
VL
vLLM · vllm-project
0.1; 0.2; 0.3; 0.4; 0.5; 0.6; +25 more · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-105922
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-105922
vdb-entry
https://vuldb.com/vuln/413896
signature
https://vuldb.com/vuln/413896/cti
third-party-advisory
https://vuldb.com/cve/CVE-2026-105922
third-party-advisory
https://vuldb.com/submit/992707
issue-tracking
https://github.com/vllm-project/vllm/issues/57719
exploit
https://gist.github.com/Yunzez/5c70a3bb328eaf6d646b9d31e879dc4a#file-repro_prompt_embeds_penalties_engine_crash-py
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