High severity · published Oct 12, 2026
CVE-2026-109226
SGLang through 0.5.21 Audio Decompression Amplification via load_audio
7.5
CVSS
0.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 46% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SG
sglang · sgl-project
through 0.5.21 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-109226
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-109226
issue-tracking
https://github.com/sgl-project/sglang/issues/43708
technical-description
https://github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/utils/common.py#L1783
technical-description
https://github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/utils/common.py#L1801-L1803
technical-description
https://github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/multimodal/audio_from_video.py#L128
technical-description
https://github.com/sgl-project/sglang/blob/v0.5.21/python/sglang/srt/multimodal/processors/base_processor.py#L996
product
https://github.com/sgl-project/sglang
More from sglang
8.6
CVE-2026-92972
SGLang through 0.5.19 Unauthenticated Route Poisoning via PUT endpoint
8.1
CVE-2026-111391
SGLang 0.5.10 through 0.5.22 Code Injection via Debug Dumper Filter
7.5
CVE-2026-112082
sgl-project SGLang Expert-Distribution Recording Endpoint expert_distribution.py Scheduler.expert_distribution_handle denial of service
7.5
CVE-2026-109229
SGLang through 0.5.21 Decompression Bomb DoS via NanoNemotronVLImageProcessor
7.5
CVE-2026-109228
SGLang through 0.5.21 Resource Budget Bypass via GLM-V Video Parameters