CVE-2025-62426
Fixed in a distro release EPSS <1%CVSS 6.5
vLLM is an inference and serving engine for large language models (LLMs). From version 0.5.5 to before 0.11.1, the /v1/chat/completions and /tokenize endpoints allow a chat_template_kwargs request parameter that is used in the code before it is properly validated against the chat template. With the right chat_template_kwargs parameters, it is possible to block processing of the API server for long periods of time, delaying all other requests. This issue has been patched in version 0.11.1.
Products: vllm-project vllm
Fixed upstream
| Ecosystem | Package | Fixed in |
|---|---|---|
| PyPI | vllm | 0.11.1 |
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Chainguard | tritonserver-backend-vllm-meta-cuda-12.9 | 25.9.0_git20251112-r1 |