VULNERABILITY INTELLIGENCE
CVE-2026-91021
CVSS score5.4 MEDIUM
EPSS probability0.23%
CISA KEVNot currently listed
Published2026-09-14
Last modified2026-09-16
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Description
Trilium Notes, version v0.103.0 and earlier, contains a stored cross-site scripting (XSS) vulnerability in the share renderer for webView notes due to improper HTML escaping of user-controlled #webViewSrc values. This vulnerability allows attackers with note-authoring privileges to inject arbitrary JavaScript that executes for any user who opens the shared note, including administrators.
Weakness classification
- 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-79