CVE-2026-33955 | streetwriters Notesnook Web/Notesnook Desktop up to 3.3.10 cross site scripting (GHSA-45g3-cv93-q59v)

VDB-354044 · CVE-2026-33955 · GHSA-45G3-CV93-Q59V STREETWRITERS NOTESNOOK WEB/NOTESNOOK DESKTOP UP TO 3.3.10 CROSS SITE SCRIPTING HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.9 $0-$5k 1.56+ Summaryinfo A vulnerability described as problematic has been identified in streetwriters Notesnook Web and Notesnook Desktop up to 3.3.10. This impacts an unknown function. Such manipulation leads to cross site scripting. This vulnerability is traded as CVE-2026-33955. An attack has to be approached locally. There is no exploit available. Upgrading the affected component is recommended. Detailsinfo A vulnerability, which was classified as problematic, has been found in streetwriters Notesnook Web and Notesnook Desktop up to 3.3.10. Affected by this issue is an unknown code block. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. CVE summarizes: 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. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-33955 since 03/24/2026. The exploitation is known to be easy. The attack needs to be approached locally. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.007. Upgrading to version 3.3.11 eliminates this vulnerability. Productinfo Vendor streetwriters Name Notesnook Desktop Notesnook Web Version 3.3.0 3.3.1 3.3.2 3.3.3 3.3.4 3.3.5 3.3.6 3.3.7 3.3.8 3.3.9 3.3.10 CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 5.9 VulDB Meta Temp Score: 5.9 VulDB Base Score: 3.3 VulDB Temp Score: 3.2 VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA Base Score: 8.6 CNA Vector (GitHub_M): 🔒 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Cross site scripting CWE: CWE-79 / CWE-94 / CWE-74 CAPEC: 🔒 ATT&CK: 🔒 Physical: Partially Local: Yes Remote: Partially Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: Notesnook Web/Notesnook Desktop 3.3.11 Timelineinfo 03/24/2026 CVE reserved 03/27/2026 +3 days Advisory disclosed 03/27/2026 +0 days VulDB entry created 03/27/2026 +0 days VulDB entry last update Sourcesinfo Advisory: GHSA-45g3-cv93-q59v Status: Confirmed CVE: CVE-2026-33955 (🔒) GCVE (CVE): GCVE-0-2026-33955 GCVE (VulDB): GCVE-100-354044 Entryinfo Created: 03/27/2026 23:47 Changes: 03/27/2026 23:47 (64) Complete: 🔍 Cache ID: 99:9AB:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸