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CVE-2026-109229
HIGH7.5
Published 2026-10-12 · Updated 2026-10-12 · Source disclosure@vulncheck.com
Description
SGLang through 0.5.21 contains a denial of service vulnerability that disables Pillow decompression bomb protection process-wide by setting Image.MAX_IMAGE_PIXELS to None in NanoNemotronVLImageProcessor. Remote attackers can submit small, highly compressed images with huge dimensions to the generic image loader, exhausting worker memory during decoding.
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE-409
References
- https://github.com/sgl-project/sglang
- https://github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/multimodal/processors/nano_nemotron_vl.py#L82
- https://github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/utils/common.py#L1952-L1961
- https://github.com/sgl-project/sglang/issues/43707
- https://www.vulncheck.com/advisories/sglang-through-0.5.21-decompression-bomb-dos-via-nanonemotronvlimageprocessor

