Description
Notesnook is a note-taking app focused on user privacy & ease of use. Prior to version 3.3.17, a stored XSS vulnerability exists in the mobile share / web clip flow because attacker-controlled clip metadata is concatenated into HTML without escaping and then rendered with innerHTML inside the mobile share editor WebView. An attacker can control the shared title metadata (for example through Android/iOS share metadata such as TITLE / SUBJECT, or through link-preview title data) and inject HTML such as </a><img src=x onerror=...>. When the victim opens the Notesnook share flow and selects Web clip, the payload is inserted into the generated HTML and executed in the mobile editor WebView. This issue has been patched in version 3.3.17.
INFO
Published Date :
2026-04-01T16:11:56.610Z
Last Modified :
2026-04-01T19:07:24.523Z
Source :
GitHub_M
AFFECTED PRODUCTS
The following products are affected by CVE-2026-33978 vulnerability.
| Vendors | Products |
|---|---|
| Streetwriters |
|
REFERENCES
Here, you will find a curated list of external links that provide in-depth information to CVE-2026-33978.
