SEPTEMBER 17, 2026
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Case File

CVE-2026-86191

MEDIUM · CVSS 4.3 EPSS 0.17% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-05 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

Versions of SiYuan prior to v3.8.2 are vulnerable to an information disclosure flaw in the getAttributeViewKeysByID endpoint, enabling unauthorized users to enumerate private attribute view key definitions without proper visibility checks. This vulnerability allows attackers to access sensitive key schemas, including field names and relational definitions from hidden databases. Organizations using affected versions should prioritize patching to mitigate the risk of data exposure.

Public Exploit Signal

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

GitHub PoC Links

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

CVE
CVE-2026-86191
Severity
MEDIUM
CVSS
4.3
EPSS
0.17%

Original NVD Description

SiYuan versions before v3.8.2 contain an information disclosure vulnerability in the getAttributeViewKeysByID endpoint that allows publish readers to enumerate private attribute view key definitions without verifying parent database visibility. Attackers can access the endpoint to retrieve complete key schemas including sensitive field names and relation definitions from hidden databases.