CVE-2026-109226
highSGLang through 0.5.21 contains a decompression amplification vulnerability in load_audio that allows remote attackers to exhaust memory by submitting highly co…
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/sgl-project/sglang disclosure@vulncheck.com
- https://github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/multimodal/audio_from... disclosure@vulncheck.com
- https://github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/multimodal/processors... disclosure@vulncheck.com
- https://github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/utils/common.py#L1783 disclosure@vulncheck.com
- https://github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/utils/common.py#L1801... disclosure@vulncheck.com
- https://github.com/sgl-project/sglang/issues/43708 disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/sglang-through-0.5.21-audio-decompression-amplificati... disclosure@vulncheck.com
- https://github.com/sgl-project/sglang/issues/43708 134c704f-9b21-4f2e-91b3-4a467353bcc0