High severity7.5NVD Advisory· Published Oct 12, 2026· Updated Oct 12, 2026
CVE-2026-109226
CVE-2026-109226
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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Affected products
1- Range: <=0.5.21
Patches
Vulnerability mechanics
References
6- github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/multimodal/audio_from_video.pynvd
- github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/multimodal/processors/base_processor.pynvd
- github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/utils/common.pynvd
- github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/utils/common.pynvd
- github.com/sgl-project/sglang/issues/43708nvd
- www.vulncheck.com/advisories/sglang-through-0.5.21-audio-decompression-amplification-via-load-audionvd
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