CVE-2026-109226
SGLang through 0.5.21 Audio Decompression Amplification via load_audio
sgl-project sglang
CVSS
8.7HighExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 13 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.46%Chance of exploitation activity in the next 30 days, higher than 39% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
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.
Text from CVE List
Affected versions 1
- sglangaffected: all versions through 0.5.21CVE List
References 7
- vulncheck.com/advisories/sglang-through-0.5.21-audio-decompression-amplification-via-load-audioAdvisoryvia CVE List
- github.com/sgl-project/sglang/issues/43708Exploitvia CVE List
- github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/utils/common.py#L1783Referencevia CVE List
- github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/utils/common.py#L1801-L1803Referencevia CVE List
- github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/multimodal/audio_from_video.py#L128Referencevia CVE List
- github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/multimodal/processors/base_processor.py#L996Referencevia CVE List
- github.com/sgl-project/sglangReferencevia CVE List