SEPTEMBER 18, 2026
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Case File

CVE-2026-86793

CRITICAL · CVSS 9.8 EPSS 0.43% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-11 · Last synced 2026-09-18

CyberRota Analysis

AI-Generated

SGLang is vulnerable to unauthenticated pickle deserialization through the /update_weights_from_tensor endpoint when authentication keys are not configured, allowing attackers to bypass the SafeUnpickler policy. This flaw enables remote code execution via the pickle REDUCE function, posing a significant risk to systems using this library. Organizations utilizing SGLang should prioritize addressing this vulnerability to mitigate potential exploitation risks.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
code execution
GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-86793
Severity
CRITICAL
CVSS
9.8
EPSS
0.43%

Original NVD 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.