CVEvulnerability
CVE-2026-109226
8.7 HIGH
Official page ↗
- Status
- Deferred
- Published
- 2026-10-12
- Last modified
- 2026-10-13
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 8.7 HIGH — 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-409
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.
Related
Weakness · CWE (1)
- CWE-409 Improper Handling of Highly Compressed Data (Data Amplification) weakness
References
- https://github.com/sgl-project/sglang github.com
- https://github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/multimodal/audio_from_video.py#L128 github.com
- https://github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/multimodal/processors/base_processor.py#L996 github.com
- https://github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/utils/common.py#L1783 github.com
- https://github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/utils/common.py#L1801-L1803 github.com
- https://github.com/sgl-project/sglang/issues/43708 github.com
- https://www.vulncheck.com/advisories/sglang-through-0.5.21-audio-decompression-amplification-via-load-audio www.vulncheck.com
- https://github.com/sgl-project/sglang/issues/43708 github.com