CVE-2021-22896 Information

Description

Nextcloud Mail before 1.9.5 suffers from improper access control due to a missing permission check allowing other authenticated users to create mail aliases for other users.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Reference

https://github.com/nextcloud/mail/pull/4864 https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jmgp-77jq-fjp3 https://github.com/nextcloud/mail/releases/tag/v1.9.5 https://hackerone.com/reports/1129996

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

LOW

Base Score

NONE

Base Severity

4.3