CVE-2026-73050CWE-79cross-site-scripting

CVE-2026-73050

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 the color field in attribute-view select options, allowing stored cross-site scripting through eight unescaped render sites. Attackers can inject event-handler attributes by including quotation marks in the color value, executing arbitrary JavaScript when viewing databases containing the malicious select field.

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-m7cc-jh9q-wxg8 · [email protected]https://www.vulncheck.com/advisories/siyuan-before-stored-xss-via-select-option-color · [email protected]https://github.com/siyuan-note/siyuan/security/advisories/GHSA-m7cc-jh9q-wxg8 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 15 AUG 21:44Z
    SiYuan before v3.7.4 Stored XSS via select option color
    cvelistv5