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CVE-2026-86793

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.

当未配置认证密钥时，SGLang 在 端点允许未认证的 pickle 反序列化；由于内置的 和 均可被解析，SafeUnpickler 的安全策略可能被绕过，从而通过 pickle 的 REDUCE 操作实现代码执行。

AI Predicted 9.8 Difficulty: Trivial EPSS 0.21% · P11

Affected Version Matrix 1

VendorProduct Version RangeStatus
SGLang SGLang ≤ 0.5.18 affected
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I. Basic Information for CVE-2026-86793

Vulnerability Information
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Vulnerability Title
CVE-2026-86793
Source: CVE Program / CVE List V5
Vulnerability Description
SGLang allows unauthenticated pickle deserialization through /update_weights_from_tensor when no auth keys are configured, and the SafeUnpickler policy can be bypassed because builtins.import and builtins.getattr are resolvable, enabling code execution via pickle REDUCE.
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

Affected Products

Vendor Product Affected Versions CPE Subscribe
SGLang SGLang 0 ~ 0.5.18 -

II. Public POCs for CVE-2026-86793

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III. Intelligence Information for CVE-2026-86793

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Security Blog Posts for CVE-2026-86793 (1)

Vendor Pages for CVE-2026-86793 (1)

IV. Related Vulnerabilities

Same product: SGLang
Same vendor: SGLang

V. Comments for CVE-2026-86793

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