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Advisories

SGLang through 0.5.21 Decompression Bomb DoS via NanoNemotronVLImageProcessor

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severity
high
date
Affecting

  • sglang <= 0.5.21

CWE
  • CWE-409 Improper Handling of Highly Compressed Data (Data Amplification)
CVSS
8.7
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Credit
Jiapeng Li, Jiajia Liu, Jiadai Wang
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.

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