CVE-2021-39220

Summary

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.

Affected Software

VendorProductVersion RangeStatus
nextcloudsecurity-advisories< 1.10.4, < 1.11.0affected

Weaknesses

  • CWE-20: CWE-20: Improper Input Validation
  • CWE-200: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

ADP Enrichment

CVE Program Container

Additional References

References