CVE-2026-116167
SiYuan 2.9.0 before 3.8.7 XSS via check-auth to Parameter
HIGH 7.6EPSS 0.7%
SiYuan from 2.9.0 before 3.8.7 contains a cross-site scripting vulnerability in the unauthenticated /check-auth page that assigns the to parameter to window.location.href without scheme validation. Attackers can send a crafted link with a javascript: URI that executes after victim login, invoking kernel APIs to read or modify workspace content and settings.
- Affected
- siyuan-note · siyuan
- CVSS v4.0 VULNCHECK
- 7.6 HIGH
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS v3.1 VULNCHECK
- 6.8 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N - EPSS
- 0.66% chance of exploitation in the next 30 days, 51st percentile
- Nuclei
- high · CWE-79
- Published
- 2026-10-25
- Updated
- 2026-10-26
Nuclei templates (1)
- projectdiscovery/nuclei-templates/blob/main/http/cves/2026/CVE-2026-116167.yamlRepo stars 13262★ · pushed 2026-10-31 · find archive
CVE references
- siyuan-note/siyuan/security/advisories/GHSA-fmj3-xc2f-6w4wREFERENCE
- https://www.vulncheck.com/advisories/siyuan-2.9.0-before-3.8.7-xss-via-check-auth-to-para…REFERENCE