Quick answers
- Is CVE-2026-48996 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-48996 being exploited in the wild.
- How severe is CVE-2026-48996?
- Informational severity, with a CVSS score of 9.3, published 27 August 2026.
- Which products and versions are affected?
- TriliumNext Trilium up to and including 0.103.0.
- Is there a fix for CVE-2026-48996?
- A patch was published on 2026-08-20: Fixed in version 0.104.0 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-48996 attacked?
- It is attacked with local access, in a software library.
- Am I affected by CVE-2026-48996?
- Check whether you run TriliumNext Trilium at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
This vulnerability is a stored cross-site scripting (XSS) that escalates to remote code execution (RCE) on the Electron desktop client. The root cause is that the GeoMap widget's buildIcon() function interpolates note titles directly as raw HTML via innerHTML without sanitization, even though the "Safe import" filter is enabled. The attack vector requires user interaction: an attacker must trick the victim into importing a malicious .zip archive containing a GeoMap note with an HTML event-handler payload (e.g., <img onerror="...">) in its title. The XSS fires when the map renders the marker icon, and because the Electron renderer has nodeIntegration enabled, the injected JavaScript can call Node.js APIs like child_process.exec() to achieve full RCE. The vulnerability was patched in version 0.104.0 by properly escaping title values before rendering.
Affected products
- TriliumNext Trilium up to and including 0.103.0
Timeline
- 2026-08-20: disclosed
- 2026-08-27: advisory: CVE-2026-48996 published
- 2026-08-20: patched: Fixed in version 0.104.0