CVE-2026-33955HIGH 8.6EPSS p26.2%
CVE-2026-33955CVE-2026-33955
Description
Notesnook is a note-taking app. Prior to version 3.3.11 on Web/Desktop, a cross-site scripting vulnerability stored in the note history comparison viewer can escalate to remote code execution in a desktop application. The issue is triggered when an attacker-controlled note header is displayed using `dangerouslySetInnerHTML` without secure handling. When combined with the full backup and restore feature in the desktop application, this becomes remote code execution because Electron is configured with `nodeIntegration: true` and `contextIsolation: false`. Version 3.3.11 patches the issue.
Scoring
| CVSS 3.1 | 8.6 (HIGH) |
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H |
| EPSS | 0.34% probability of exploitation · percentile 26.2% · 2026-06-19T12:03:05Z |
| Published | 2026-03-27 |
| Last modified | 2026-04-02 |
Underlying weaknesses· 2
References
2
| Type | Target | Confidence | Tier |
|---|---|---|---|
| Weakness | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')cwe-79 | 0% | live |
| Weakness | Improper Control of Generation of Code ('Code Injection')cwe-94 | 0% | live |
Related by meaning· 6
Nearest entities by semantic similarity across the cs-graph corpus.