Vulnerability · Published Sep 14, 2026 · Assigned by VulDB
CVE-2026-90713vllm-project vLLM tiktoken vocab File mod.rs new denial of service
Low 3.3
In plain English
A low-severity security flaw in vLLM from vllm-project. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 5% of all known vulnerabilities).
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| vllm-project | vLLM | 0.10.20.30.40.50.60.70.8 |
Weakness: CWE-404 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R
References
- VDB-403267 | vllm-project vLLM tiktoken vocab File mod.rs new denial of service vdb-entry, technical-description
- VDB-403267 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- CVE-2026-90713 | CVE Analysis and Report third-party-advisory
- Submit #918762 | vLLM Project (vllm-project) vLLM v0.26.0 Denial of Service third-party-advisory
- https://github.com/vllm-project/vllm/issues/50954 issue-tracking
- https://github.com/vllm-project/vllm/pull/51135 issue-tracking, patch
- https://gist.github.com/Yunzez/4b08ec3568a8cbfb120062e2558382b8 exploit
- https://github.com/vllm-project/vllm/ product