CVE-2026-90713: vLLM denial of service in tiktoken vocab file handling

Summary

A flaw in vllm-project vLLM up to 0.29.0 affects the function TiktokenTokenizer::new in rust/src/text/src/backend/hf/mod.rs, within the tiktoken vocab File Handler component. Manipulating this function causes a denial of service, and the attack requires local access. A public exploit exists, and a pull request to fix the issue is awaiting acceptance.

Mitigation

The source states that a pull request to fix this issue awaits acceptance. It does not name a fixed version or a workaround.

Topics

• Inference infrastructure

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