CVE-2026-45266 PUBLISHED

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

Assigner: GitHub_M
Reserved: 11.05.2026 Published: 01.06.2026 Updated: 01.06.2026

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.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
CVSS Score: 3.5

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	Low	Integrity Impact	Low
User Interaction	Required	Availability Impact	None

CVSS 3.1

Product Status

Vendor	nextcloud
Product	security-advisories
Versions	Version < 21.1.10 is affected Version < 22.0.11 is affected Version < 23.0.3 is affected

References

Problem Types

CWE-284: Improper Access Control CWE