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Medium · 5.4 CVE-2026-91021 EUVD-2026-77678GHSA-g94c-cfqp-6xq2

CVE-2026-91021

Published Sep 14, 2026 · Updated Sep 14, 2026 · Assigned by certcc

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.

Affected products

VendorProductAffectedFixed
Trilium Trillium Notes ≤ v0.103.0 —

References