Bncrypted

**Name of the Vulnerable Software and Affected Versions** Nextcloud Server versions prior to 20.0.13 Nextcloud Server versions prior to 21.0.5 Nextcloud Server versions prior to 22.2.0 **Description** Nextcloud is an open-source, self-hosted productivity platform. Prior to versions 20.0.13, 21.0.5, and 22.2.0, Nextcloud Server did not implement a database backend for rate-limiting purposes. Any component of Nextcloud using rate-limits (as `AnonRateThrottle` or `UserRateThrottle`) was thus not rate limited on instances not having a memory cache backend configured. In the case of a default installation, this would notably include the rate-limits on the two factor codes. **Recommendations** Upgrade Nextcloud Server to version 20.0.13 Upgrade Nextcloud Server to version 21.0.5 Upgrade Nextcloud Server to version 22.2.0 As a workaround, enable a memory cache backend in `config.php`

**Name of the Vulnerable Software and Affected Versions** Nextcloud versions prior to 20.0.13 Nextcloud versions prior to 21.0.5 Nextcloud versions prior to 22.2.0 **Description** A file traversal vulnerability in Nextcloud allows an attacker to download arbitrary SVG images from the host system, including user-provided files. This could be leveraged into a XSS/phishing attack by uploading a malicious SVG file that mimics the Nextcloud login form and sending a specially crafted link to victims. However, the XSS risk is mitigated due to Nextcloud's strict Content-Security-Policy, which disallows execution of arbitrary JavaScript. **Recommendations** Upgrade to version 20.0.13 or later Upgrade to version 21.0.5 or later Upgrade to version 22.2.0 or later There are no known workarounds aside from upgrading.