CVEvulnerability

CVE-2021-41179

6.5 MEDIUM Published 2021-10-25 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2021-10-25
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0 ([email protected])
4.0 MEDIUM — AV:N/AC:L/Au:S/C:P/I:N/A:N
Weaknesses
CWE-304

Description

Nextcloud is an open-source, self-hosted productivity platform. Prior to Nextcloud Server versions 20.0.13, 21.0.5, and 22.2.0, the Two-Factor Authentication wasn't enforced for pages marked as public. Any page marked as `@PublicPage` could thus be accessed with a valid user session that isn't authenticated. This particularly affects the Nextcloud Talk application, as this could be leveraged to gain access to any private chat channel without going through the Two-Factor flow. It is recommended that the Nextcloud Server be upgraded to 20.0.13, 21.0.5 or 22.2.0. There are no known workarounds aside from upgrading.

Affected configurations

• nextcloud server (>= 20.0.3 < 20.0.13) • nextcloud server (>= 21.0.1 < 21.0.5) • nextcloud server (>= 22.1.1 < 22.2.0)

Related

Weakness · CWE (1)

  • CWE-304 Missing Critical Step in Authentication weakness

References