CVE-2021-39220

Low

Description

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.

SeverityLow
CVSS3.5
Exploit probability—
ProductNextcloud Mail
PublishedOct 25, 2021
First seenOct 25, 2021

How to fix

Update
  • nextcloud mail1.10.4 or later

Affected products

ProductAffected versionsFixed in
nextcloud mailv < 1.10.41.10.4

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