CVE-2021-32707 (GCVE-0-2021-32707)

Vulnerability from cvelistv5 – Published: 2021-07-12 19:05 – Updated: 2024-08-03 23:25
VLAI
Title
Bypass of image blocking in Nextcloud Mail
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.
Severity
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CWE
  • CWE-20 - Improper Input Validation
  • CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor
Assigner
GitHub_M CNA
References
Impacted products
Show details on NVD website
To clipboard 

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