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CVE-2026-3989

Quick assessment

Affected
SGLang 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是sgl-project开源的一个用于加速大模型推理的编程语言与运行时系统。 sglang存在安全漏洞，该漏洞源于replay_request_dump.py文件中pickle.load()使用不当，可能导致执行恶意代码。

AI Predicted 8.0 Difficulty: Easy EPSS 0.43% · P35
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I. Basic Information for CVE-2026-3989

Vulnerability Information
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Vulnerability Title
CVE-2026-3989
Source: CVE Program / CVE List V5
Vulnerability Description
SGLangs `replay_request_dump.py` contains an insecure pickle.load() without validation and proper deserialization. An attacker can take advantage of this by providing a malicious .pkl file, which will execute the attackers code on the device running the script.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
sglang 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
sglang是sgl-project开源的一个用于加速大模型推理的编程语言与运行时系统。 sglang存在安全漏洞，该漏洞源于replay_request_dump.py文件中pickle.load()使用不当，可能导致执行恶意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
SGLang SGLang 0.5.10 -

II. Public POCs for CVE-2026-3989

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III. Intelligence Information for CVE-2026-3989

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Patches & Fixes for CVE-2026-3989 (1)

Security Blog Posts for CVE-2026-3989 (1)

Other References for CVE-2026-3989 (1)

Same Patch Batch · SGLang · 2026-03-12 · 3 CVEs total

CVE-2026-3060 CVE-2026-3060
CVE-2026-3059 CVE-2026-3059

IV. Related Vulnerabilities

Same product: SGLang
Same vendor: SGLang

V. Comments for CVE-2026-3989

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