CVE-2023-39955 Information

Description

Notes is a note-taking app for Nextcloud an open-source cloud platform. Starting in version 4.4.0 and prior to version 4.8.0 when creating a note file with HTML the content is rendered in the preview instead of the file being offered to download. Nextcloud Notes app version 4.8.0 contains a patch for the issue. No known workarounds are available.

Reference

https://hackerone.com/reports/1924355 https://github.com/nextcloud/security-advisories/security/advisories/GHSA-6g88-37x7-4vw6 https://github.com/nextcloud/notes/pull/1031