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CVE-2026-109229— SGLang through 0.5.21 Decompression Bomb DoS via NanoNemotronVLImageProcessor

Quick assessment

Affected
sgl-project sglang
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

SGLang 0.5.21 及之前版本存在一个拒绝服务漏洞。该漏洞通过在 中将 设置为 ，禁用了 Pillow 解压缩炸弹的全局防护机制。远程攻击者可以向通用图像加载器提交尺寸极大但高度压缩的小图片，在解码过程中耗尽工作进程的内存。

CVSS 7.5 · High

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 1

VendorProduct Version RangeStatus
sgl-project sglang ≤ 0.5.21 affected
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I. Basic Information for CVE-2026-109229

Vulnerability Information
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Vulnerability Title
SGLang through 0.5.21 Decompression Bomb DoS via NanoNemotronVLImageProcessor
Source: CVE Program / CVE List V5
Vulnerability Description
SGLang through 0.5.21 contains a denial of service vulnerability that disables Pillow decompression bomb protection process-wide by setting Image.MAX_IMAGE_PIXELS to None in NanoNemotronVLImageProcessor. Remote attackers can submit small, highly compressed images with huge dimensions to the generic image loader, exhausting worker memory during decoding.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对高度压缩数据的处理不恰当(数据放大攻击)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
sgl-project sglang 0 ~ 0.5.21 -

II. Public POCs for CVE-2026-109229

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-109229

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Patches & Fixes for CVE-2026-109229 (1)

Vendor Advisories for CVE-2026-109229 (1)

Other References for CVE-2026-109229 (2)

Same Patch Batch · sgl-project · 2026-10-12 · 5 CVEs total

CVE-2026-109225 7.5 HIGH SGLang through 0.5.21 Memory Exhaustion DoS via /v1/audio/transcriptions Upload
CVE-2026-109226 7.5 HIGH SGLang through 0.5.21 Audio Decompression Amplification via load_audio
CVE-2026-109227 7.5 HIGH SGLang through 0.5.21 Memory Exhaustion DoS via Qwen-VL Video Preprocessing
CVE-2026-109228 7.5 HIGH SGLang through 0.5.21 Resource Budget Bypass via GLM-V Video Parameters

IV. Related Vulnerabilities

Same product: sglang
Same vendor: sgl-project
Same weakness: CWE-409

V. Comments for CVE-2026-109229

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