| CVE-2021-39220 | Date: (C)2021-10-27 (M)2023-12-22 |
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.
CVSS Score and Metrics +CVSS Score and Metrics -| CVSS V3 Severity: | CVSS V2 Severity: |
| CVSS Score : 3.5 | CVSS Score : 3.5 |
| Exploit Score: 2.1 | Exploit Score: 6.8 |
| Impact Score: 1.4 | Impact Score: 2.9 |
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| CVSS V3 Metrics: | CVSS V2 Metrics: |
| Attack Vector: NETWORK | Access Vector: NETWORK |
| Attack Complexity: LOW | Access Complexity: MEDIUM |
| Privileges Required: LOW | Authentication: SINGLE |
| User Interaction: REQUIRED | Confidentiality: PARTIAL |
| Scope: UNCHANGED | Integrity: NONE |
| Confidentiality: LOW | Availability: NONE |
| Integrity: NONE | |
| Availability: NONE | |
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