CVE-2026-45266

LOW

Nextcloud: Unauthorized force-mute from missing permission check when using internal signaling

Title source: cna
STIX 2.1

Description

Nextcloud is an open source content collaboration platform. Prior to versions 21.1.10, 22.0.11, and 23.0.3, a low-privileged user can force other user's microphones to be muted in calls when no High-performance Backend is installed. This issue has been patched in versions 21.1.10, 22.0.11, and 23.0.3.

References (3)

Core 3
Core References
X_Refsource_Misc x_refsource_misc
https://github.com/nextcloud/spreed/pull/17577
X_Refsource_Misc x_refsource_misc
https://hackerone.com/reports/3636758

Scores

CVSS v3 3.5
EPSS 0.0020
EPSS Percentile 10.2%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N

Details

CWE
CWE-284
Status published
Products (3)
nextcloud/security-advisories < 21.1.10
nextcloud/security-advisories < 22.0.11
nextcloud/security-advisories < 23.0.3
Published Jun 01, 2026
Tracked Since Jun 01, 2026