Vulnerabilities > CVE-2021-32707 - Unspecified vulnerability in Nextcloud Mail
Attack vector
NETWORK Attack complexity
LOW Privileges required
LOW Confidentiality impact
NONE Integrity impact
LOW Availability impact
NONE Summary
Nextcloud Mail is a mail app for Nextcloud. In versions prior to 1.9.6, the Nextcloud Mail application does not, by default, render images in emails to not leak the read state. The privacy filter failed to filter images with a `background-image` CSS attribute. Note that the images were still passed through the Nextcloud image proxy, and thus there was no IP leakage. The issue was patched in version 1.9.6 and 1.10.0. No workarounds are known to exist.
Vulnerable Configurations
References
- https://github.com/nextcloud/mail/pull/5189
- https://github.com/nextcloud/mail/pull/5189
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xxp4-44xc-8crh
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xxp4-44xc-8crh
- https://hackerone.com/reports/1215251
- https://hackerone.com/reports/1215251