CVE-2023-48307 Information

Description

Nextcloud Mail is the mail app for Nextcloud a self-hosted productivity platform. Starting in version 1.13.0 and prior to version 2.2.8 and 3.3.0 an attacker can use an unprotected endpoint in the Mail app to perform a SSRF attack. Nextcloud Mail app versions 2.2.8 and 3.3.0 contain a patch for this issue. As a workaround disable the mail app.

Reference

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-4pp4-m8ph-2999 https://github.com/nextcloud/mail/pull/8709 https://hackerone.com/reports/1869714