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CVE-2026-109228— SGLang through 0.5.21 Resource Budget Bypass via GLM-V Video Parameters

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 及之前版本中存在一个资源预算绕过漏洞。攻击者可通过在 video_url 对象中提供 fps、max_frames、max_tokens_per_frame 和 max_image_tokens 等参数，覆盖 GLM-V 视频处理限制。攻击者可将这些值任意设置得极高，导致 glm4v.py 对高清视频的每一帧以全尺寸进行解码，从而耗尽工作节点的内存资源，造成拒绝服务（DoS）攻击。

CVSS 7.5 · High

Affected Version Matrix 1

VendorProduct Version RangeStatus
sgl-project sglang ≤ 0.5.21 affected
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I. Basic Information for CVE-2026-109228

Vulnerability Information
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Vulnerability Title
SGLang through 0.5.21 Resource Budget Bypass via GLM-V Video Parameters
Source: CVE Program / CVE List V5
Vulnerability Description
SGLang through 0.5.21 contains a resource budget bypass vulnerability that allows remote attackers to override GLM-V video processing limits by supplying fps, max_frames, max_tokens_per_frame and max_image_tokens in the video_url object. Attackers can set these values arbitrarily high so glm4v.py decodes every frame of high-resolution video at full size, exhausting worker memory and denying service.
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
不加限制或调节的资源分配
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-2026-109228

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III. Intelligence Information for CVE-2026-109228

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Patches & Fixes for CVE-2026-109228 (2)

Vendor Advisories for CVE-2026-109228 (1)

News Coverage for CVE-2026-109228 (1)

Other References for CVE-2026-109228 (1)

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-2026-109229 7.5 HIGH SGLang through 0.5.21 Decompression Bomb DoS via NanoNemotronVLImageProcessor

IV. Related Vulnerabilities

Same product: sglang
Same vendor: sgl-project
Same weakness: CWE-770

V. Comments for CVE-2026-109228

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