Medium severity5.4NVD Advisory· Published Sep 14, 2026· Updated Sep 14, 2026
CVE-2026-91021
CVE-2026-91021
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.
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Affected products
2- Range: <=v0.103.0
Patches
Vulnerability mechanics
References
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