CVE-2026-22778: vLLM information leak of heap address via multimodal endpoint image errors

Summary

CVE-2026-22778 affects vLLM from 0.8.3 before 0.14.1. An invalid image sent to the multimodal endpoint makes PIL raise an error, which vLLM returns to the client, leaking a heap address and cutting ASLR from about 4 billion guesses to about 8. The leak can be chained with a heap overflow in the JPEG2000 decoder of OpenCV or FFmpeg to achieve remote code execution.

Mitigation

Fixed in 0.14.1.

Affected packages in the Exposure Registry

Matched by package name and ecosystem. Each entry shows whether the package delegates to a language model and how many tracked packages depend on it.

• vllmPyPILLM dependency since 2023-08-25 · 15 tracked dependents

Topics

• Inference infrastructure

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