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.
INFO
Published Date :
Sept. 14, 2026, 5:13 p.m.
Last Modified :
Sept. 14, 2026, 5:13 p.m.
Remotely Exploit :
No
Source :
certcc
Affected Products
The following products are affected by CVE-2026-91021
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Update Trilium Notes to a version later than v0.103.0.
- Sanitize webViewSrc values to prevent script injection.
- Avoid granting note-authoring privileges to untrusted users.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-91021 vulnerability anywhere in the article.