CVE-2026-87813

SiYuan before v3.8.2 contains a stored cross-site scripting vulnerability in the Search Assets result list where asset filenames are interpolated into HTML without escaping. Authenticated attackers can craft asset filenames containing malicious markup that executes JavaScript in the victim's browser when searching assets, enabling same-origin API requests and application state manipulation.

Scoring

Severity
HIGH
CVSS base score
8.4
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
CWE
CWE-79
Published
2026-09-09
Last modified
2026-09-09

Affected products

Weakness type

Related vulnerabilities

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