CVE-2026-73044CWE-79cross-site-scripting

CVE-2026-73044

Critical · published August 16, 2026

CVSS v3.1
9.0
EPSS
0%
Percentile
36.0
In the wild
Unconfirmed
What it is

SiYuan versions before v3.7.4 fail to validate or escape table column width values, allowing stored cross-site scripting injection into style attributes. Attackers can inject malicious payloads through the setAttrViewColWidth API that break out of style attributes and inject event handlers on every table cell, executing arbitrary code in the Electron renderer with Node integration enabled.

The record
Technical detail
CVSS v3.1
9.0 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
CVSS v4.0
9.4 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
EPSS
0.00428 · 36.0th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-08-16T02:16Z
References (3)
https://github.com/siyuan-note/siyuan/security/advisories/GHSA-rj55-w3xr-gj62 · [email protected]https://www.vulncheck.com/advisories/siyuan-before-stored-cross-site-scripting-via-column-width · [email protected]https://github.com/siyuan-note/siyuan/security/advisories/GHSA-rj55-w3xr-gj62 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 15 AUG 21:44Z
    SiYuan before v3.7.4 Stored Cross-Site Scripting via Column Width
    cvelistv5