CVE-2026-90713
vllm-project vLLM tiktoken vocab File mod.rs new denial of service
- State
- Published
- Severity
- 4.8 Medium
- Published
- Sep 14, 2026
- Updated
- Sep 15, 2026
- Reserved
- Sep 13, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 4.8 Medium | CVSS:4.0/AV:L/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 | 3.3 Low | 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 | VulDB |
| 3.0 | 3.3 Low | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R | VulDB |
| 2.0 | 1.7 Low | AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR | VulDB |
Weaknesses
- CWE-404 Denial of Service
Affected Products
| Product | Versions |
|---|---|
vLLMvllm-project |
|
References
- VDB-403267 | vllm-project vLLM tiktoken vocab File mod.rs new denial of servicevdb-entrytechnical-description
- VDB-403267 | CTI Indicators (IOB, IOC, IOA)signaturepermissions-required
- CVE-2026-90713 | CVE Analysis and Reportthird-party-advisory
- Submit #918762 | vLLM Project (vllm-project) vLLM v0.26.0 Denial of Servicethird-party-advisory
- https://github.com/vllm-project/vllm/issues/50954issue-tracking
- https://github.com/vllm-project/vllm/pull/51135issue-trackingpatch
- https://gist.github.com/Yunzez/4b08ec3568a8cbfb120062e2558382b8exploit
- https://github.com/vllm-project/vllm/product
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.