# CVE-2026-48996: Trilium: Malicious import with GeoMap marker title XSS leads to RCE on the desktop client

> Attackers can achieve remote code execution on the Trilium desktop client by injecting malicious scripts via unsanitized GeoMap marker titles in imported archives.

- **Severity:** Critical 9.3 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 27 Aug 2026
- **Updated:** 29 Aug 2026
- **Also known as:** GHSA-7qfw-c9gj-2xq2

## What is CVE-2026-48996?

CVE-2026-48996 is a critical cross-site scripting vulnerability in TriliumNext Trilium, published on 27 Aug 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

Trilium is an open-source hierarchical note-taking application. In versions up to and including 0.103.0, the default-on "Safe import" filter does not sanitize note titles, and the GeoMap note view interpolates a marker note's title into raw HTML that is rendered as innerHTML, allowing an attacker-supplied import archive to inject script that runs when the map is displayed. Because Safe import neutralizes scripts but never escapes titles, a note whose title contains an HTML event-handler payload survives the import and executes as soon as the victim opens the GeoMap that renders its marker. On the desktop client the Electron renderer runs with Node integration enabled, so the injected JavaScript escalates from cross-site scripting to full remote code execution on the victim's machine. This issue is fixed in version 0.104.0.

Weakness: CWE-94 (Improper Control of Generation of Code), CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-48996?

It affects 1 product.


Products: Triliumnotes Trilium.

## How do I fix CVE-2026-48996?

No fix has been published for CVE-2026-48996 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-48996 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-48996 exists.

## Other vulnerabilities in TriliumNext Trilium

- [CVE-2026-53578](https://insights.sbomify.com/CVE-2026-53578/): Trilium: Note Import to RCE via Mind Elixir dangerouslySetInnerHtml (critical 9.3)
- [CVE-2026-53579](https://insights.sbomify.com/CVE-2026-53579/): Trilium: Note Import to RCE via Book Note (critical 9.3)
- [CVE-2026-47727](https://insights.sbomify.com/CVE-2026-47727/): Code injection in Trilium (high 8.6)
- [CVE-2026-53580](https://insights.sbomify.com/CVE-2026-53580/): Trilium arbitrary file read and denial of service via file:// URLs in the automatic image-download feature (high 8.1)
- [CVE-2026-77438](https://insights.sbomify.com/CVE-2026-77438/): Trilium unauthenticated share-search discloses password-protected and hidden shared notes (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-48996 and fix it if it is affected.

What it is: CVE-2026-48996 is a critical cross-site scripting vulnerability in TriliumNext Trilium, published on 27 Aug 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-48996 exists.

Affected product: TriliumNext Trilium. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-48996/ (Markdown: https://insights.sbomify.com/CVE-2026-48996/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-48996
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-48996
- OSV: https://osv.dev/vulnerability/CVE-2026-48996

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-48996/
Summaries are generated and may contain mistakes; the official description above is the record.