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Advisories

SGLang through 0.5.21 Audio Decompression Amplification via load_audio

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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 decompression amplification vulnerability in load_audio that allows remote attackers to exhaust memory by submitting highly compressed audio decoded without duration or sample limits. Attackers can supply small FLAC-encoded silence files through audio_url or audio_data inputs that expand into massive PCM buffers, exhausting worker memory and CPU for denial of service.

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