CVE-2026-109226
7.5, highSGLang through 0.5.21 contains a decompression amplification vulnerability in load_audio that allows remote attackers to exhaust memory…
- CVSS
- 7.5, high high CVSS v3.1
- EPSS, next 30 days
- 0.5% higher than 38.7% of scored CVEs
- Exploitation
- No public evidence
- Published
- 12 Oct 20265 days ago
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.
Details
- Vendor
- Sgl-project
- Product
- sglang
- Weakness
- CWE-409 (opens in a new tab)
- Status
- Deferred
- Updated
- 12 Oct 2026
- Assigner
- disclosure@vulncheck.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
References 7
Other references 7
- github.com /sgl-project/sglang (opens in a new tab)
- github.com /sgl-project/sglang/blob/v0.5.21/python/sglang/srt/multimodal/audio_from_video.py#L128 (opens in a new tab)
- github.com /sgl-project/sglang/blob/v0.5.21/python/sglang/srt/multimodal/processors/base_processor.py#L996 (opens in a new tab)
- github.com /sgl-project/sglang/blob/v0.5.21/python/sglang/srt/utils/common.py#L1783 (opens in a new tab)
- github.com /sgl-project/sglang/blob/v0.5.21/python/sglang/srt/utils/common.py#L1801-L1803 (opens in a new tab)
- github.com /sgl-project/sglang/issues/43708 (opens in a new tab)
- vulncheck.com /advisories/sglang-through-0.5.21-audio-decompression-amplification-via-load-audio (opens in a new tab)
The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.
Other Sgl-project CVEs
Every Sgl-project CVE we holdSame vendor in what we hold, not a known link between the flaws.
- CVE-2026-109225 Sgl-project sglang Allocation of Resources Without Limits or Throttling Vulnerability EPSS 0.4% 7.5, high
- CVE-2026-109227 Sgl-project sglang Allocation of Resources Without Limits or Throttling Vulnerability EPSS 0.4% 7.5, high
- CVE-2026-109228 Sgl-project sglang Allocation of Resources Without Limits or Throttling Vulnerability EPSS 0.5% 7.5, high
- CVE-2026-109229 SGLang through 0.5.21 contains a denial of service vulnerability that disables Pillow decompression bomb protection process-wide by… EPSS 0.4% 7.5, high
Beyond this page
Is CVE-2026-109226 in your network?
This page tells you how dangerous CVE-2026-109226 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.
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Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 17 Oct 2026, not the live upstream state.