A security flaw has been discovered in vllm-project vLLM up to 0.29.0. The affected element is the function TiktokenTokenizer::new of the file rust/src/text/src/backend/hf/mod.rs of the component tiktoken vocab File Handler. The manipulation results in denial of service.
The attack is only possible with local access. The exploit has been released to the public and may be used for attacks. The pull request to fix this issue awaits acceptance.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
Low
Partial disruption
CVSS Vector v4.0
Weakness Type (CWE)
References 8
https://gist.github.com/Yunzez/4b08ec3568a8cbfb120062e2558382b8
cna@vuldb.com
https://github.com/vllm-project/vllm/
cna@vuldb.com
https://github.com/vllm-project/vllm/issues/50954
cna@vuldb.com
https://github.com/vllm-project/vllm/pull/51135
cna@vuldb.com
https://vuldb.com/cve/CVE-2026-90713
cna@vuldb.com
https://vuldb.com/submit/918762
cna@vuldb.com
https://vuldb.com/vuln/403267
cna@vuldb.com
https://vuldb.com/vuln/403267/cti
cna@vuldb.com