CVE-2026-109226CWE-409

CVE-2026-109226

High · published October 12, 2026

CVSS v3.1
7.5
EPSS
0%
Percentile
39.2
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
8.7 · 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
EPSS
0.00464 · 39.2th percentile
Weakness
CWE-409 · Improper Handling of Highly Compressed Data (Data Amplification)
Published
2026-10-12T18:17Z
References (8)
https://github.com/sgl-project/sglang · [email protected]https://github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/multimodal/audio_from_video.py#L128 · [email protected]https://github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/multimodal/processors/base_processor.py#L996 · [email protected]https://github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/utils/common.py#L1783 · [email protected]https://github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/utils/common.py#L1801-L1803 · [email protected]https://github.com/sgl-project/sglang/issues/43708 · [email protected]https://www.vulncheck.com/advisories/sglang-through-0.5.21-audio-decompression-amplification-via-load-audio · [email protected]https://github.com/sgl-project/sglang/issues/43708 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 14 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 12 OCT 14:04Z
    SGLang through 0.5.21 Audio Decompression Amplification via load_audio
    cvelistv5
  • 12 OCT 14:04Z
    SGLang through 0.5.21 Audio Decompression Amplification via load_audio
    cvelistv5