CVE-2026-42090

Katalog CVE

CVSS 9.6 · Critical EPSS 0,85%

Kerentanan Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') pada streetwriters notesnook desktop, streetwriters notesnook mobile. Skor CVSS 3.1 9.6 (Critical) menurut github.com.

Deskripsi (NVD)

Notesnook is a note-taking app focused on user privacy & ease of use. Prior to Notesnook Web/Desktop version 3.3.15 and prior to Notesnook iOS/Android version 3.3.20, a stored XSS vulnerability in the note export flow can be escalated to remote code execution in the desktop app. The root cause is that exported note fields such as title, headline, and content are inserted into the generated HTML template without HTML escaping. When the note is later exported to PDF, Notesnook renders that HTML into a same-origin, unsandboxed iframe using iframe.srcdoc = .... Injected script executes in the Notesnook origin. In the desktop app, this becomes RCE because Electron is configured with nodeIntegration: true and contextIsolation: false. This issue has been patched in Notesnook Web/Desktop version 3.3.15 and Notesnook iOS/Android version 3.3.20.

Rincian

Terbit di NVD

4 Mei 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

9.6 (Critical), sumber github.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-94: Improper Control of Generation of Code ('Code Injection')

EPSS (30 hari)

0,85% peluang dieksploitasi; lebih tinggi dari 57,0% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/streetwriters/notesnook/security/advisories/GHSA-fjm8-jg78-89h4 advisory vendor
• https://github.com/streetwriters/notesnook/releases/tag/3.3.20-android release notes
• https://github.com/streetwriters/notesnook/releases/tag/v3.3.15 release notes