SEPTEMBER 15, 2026
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Case File

CVE-2026-87814

HIGH · CVSS 7.3 EPSS 0.21% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-09 · Last synced 2026-09-15

CyberRota Analysis

AI-Generated

A stored cross-site scripting vulnerability in the search asset preview feature of SiYuan prior to version 3.8.2 allows attackers to inject malicious JavaScript into the application. This can lead to unauthorized API requests and manipulation of the workspace when victims preview the compromised assets. Organizations using SiYuan should prioritize patching this vulnerability to protect against potential exploitation.

Public Exploit Signal

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

GitHub PoC Links
github.com ↗

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

CVE
CVE-2026-87814
Severity
HIGH
CVSS
7.3
EPSS
0.21%
Java

Original NVD Description

SiYuan before v3.8.2 contains a stored cross-site scripting vulnerability in the search asset preview feature that fails to escape indexed asset content before inserting it into the DOM using innerHTML. Attackers who can place crafted text assets in a workspace can execute JavaScript in the SiYuan origin when victims preview the assets, enabling authenticated API requests and workspace manipulation.