SEPTEMBER 20, 2026
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Case File

CVE-2021-39220

LOW · CVSS 3.5 EPSS 0.76% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2021-10-25 · Last synced 2026-08-04

CyberRota Analysis

This is a low severity vulnerability with a CVSS score of 3.5. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2021-39220
Severity
LOW
CVSS
3.5
EPSS
0.76%

Original NVD 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.

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