CVE-2026-33978

MEDIUM

5.4

Descripcion

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.

Detalles CVE

Puntuacion CVSS v3.15.4

SeveridadMEDIUM

Vector CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

Vector de ataqueNETWORK

ComplejidadLOW

Privilegios requeridosNONE

Interaccion usuarioREQUIRED

Publicado4/1/2026

Ultima modificacion4/3/2026

Fuentenvd

Avistamientos honeypot0

Debilidades (CWE)

CWE-79

Referencias

https://github.com/streetwriters/notesnook/commit/fc8807f74db5539036c5e58d3d68a11ea54098db(security-advisories@github.com)

https://github.com/streetwriters/notesnook/releases/tag/3.3.17-android(security-advisories@github.com)

https://github.com/streetwriters/notesnook/security/advisories/GHSA-f27j-fqc6-v7pm(security-advisories@github.com)

Correlaciones IOC

Sin correlaciones registradas

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