CVE Vulnerability

CVE-2021-39220

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.

3.5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 6.8 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

Scope

3.5 /10

CVSS v3.0 : LOW

V3 Legend

Vector :

Exploitability : 2.1 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/nextcloud/mail/pull/5470 Patch Third Party Advisory
https://hackerone.com/reports/1308147 Permissions Required
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-6q9v-wm8r-rcv5 Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:nextcloud:mail:*:*:*:*:*:*:*:*
Information

Published : 2021-10-25 07:15

Updated : 2022-08-05 11:05

NVD link : CVE-2021-39220

Mitre link : CVE-2021-39220

Products Affected
No products.
CWE
CWE-20