CVE-2026-82653CWE-79cross-site-scripting

CVE-2026-82653

High · published August 30, 2026

CVSS v3.1
8.9
EPSS
0%
Percentile
29.3
In the wild
Unconfirmed
What it is

SiYuan before v3.8.1 contains a stored cross-site scripting vulnerability in confirmDialog() where unescaped package names and notebook names are interpolated directly into innerHTML assignments. Attackers can submit malicious bazaar packages with HTML/script payloads in the name field that execute in users' browsers when uninstalling packages or unlocking encrypted notebooks.

The record
Technical detail
CVSS v3.1
8.9 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L
CVSS v4.0
9.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L
EPSS
0.00366 · 29.3th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-08-30T19:16Z
References (3)
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-hvwp-43j9-4xgf · [email protected]https://www.vulncheck.com/advisories/siyuan-before-3.8.1-stored-xss-via-confirmdialog · [email protected]https://github.com/siyuan-note/siyuan/security/advisories/GHSA-hvwp-43j9-4xgf · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 01 SEP 03:32Z
    EPSS moved — → 0%
    epss
  • 30 AUG 14:33Z
    SiYuan before v3.8.1 Stored XSS via confirmDialog
    cvelistv5