3.5

CVE-2021-39220

Bypass of image blocking in Nextcloud Mail

Bypass of image blocking in Nextcloud Mail

Nextcloud is an open-source, self-hosted productivity platform The Nextcloud Mail application prior to versions 1.10.4 and 1.11.0 does by default not render images in emails to not leak the read state or user IP. The privacy filter failed to filter images with a relative protocol. It is recommended that the Nextcloud Mail application is upgraded to 1.10.4 or 1.11.0. There are no known workarounds aside from upgrading.
Mögliche Gegenmaßnahme
Mail: None.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Nextcloud ≫ Mail Version < 1.10.4
Weitere Schwachstelleninformationen
SystemNextcloud App
≫
Produkt Mail
Version < 1.10.4
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.26% 0.497
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 3.5 6.8 2.9
AV:N/AC:M/Au:S/C:P/I:N/A:N
security-advisories@github.com 3.5 2.1 1.4
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N
CWE-20 Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.