| Component | vLLM |
| Severity | low (CVSS 3.3) |
| CVSS vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
| Published (NVD) | 2026-09-14 |
| Last modified | 2026-09-15 |
| Affected versions | <= 0.29.0 read from the advisory text: NVD has not published CPE data yet |
| Fixed in | see the vendor advisory |
| Weakness | CWE-404 |
| CISA KEV | not listed |
NVD 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.
What to do
- NVD lists no fixed version yet: follow the vendor advisory below and keep vLLM off the public internet until a fix ships.
- Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2026-90713
- https://gist.github.com/Yunzez/4b08ec3568a8cbfb120062e2558382b8
- https://github.com/vllm-project/vllm/
- https://github.com/vllm-project/vllm/issues/50954
- https://github.com/vllm-project/vllm/pull/51135
- https://vuldb.com/cve/CVE-2026-90713
- https://vuldb.com/submit/918762
- https://vuldb.com/vuln/403267
- https://vuldb.com/vuln/403267/cti
Read more
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