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GHSA-c65p-x677-fgj6: vLLM has a Weakness in MultiModalHasher Image Hashing Implementation

OSV AI package advisories · observation · May 28, 2025 · UTC

## Summary In the file `vllm/multimodal/hasher.py`, the `MultiModalHasher` class has a security and data integrity issue in its image hashing method. Currently, it serializes `PIL.Image.Image` objects using only `obj.tobytes()`, which returns only the raw pixel data, without including metadata such as the image’s shape (width, height, mode). As a result, two images of different sizes (e.g., 30x100 and 100x30) with the same pixel byte sequence could generate the same hash value. This may lead to hash collisions, incorrect cache hits, and even data leakage or security risks. ## Details - **Affec

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recordType

vulnerability

status

active

evidenceStatus

reported

region

Global