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CVE-2026-45266 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

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.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:2.6 LOWVector:CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:N/I:L/A:N

CNA: [email protected]CVSS-B:3.5 LOWVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-x75r-65hm-cw35	[email protected]	AdvisoryRemedyVendor
https://github.com/nextcloud/spreed/pull/17577	[email protected]	Issue TrackingVendor
https://hackerone.com/reports/3636758	[email protected]	Issue TrackingPermission Required

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-284	Improper Access Control	[email protected]

Affected Products

Product	Versions
Nextcloud	< 21.1.10 (semver) < 22.0.11 (semver) < 23.0.3 (semver)
CPE cpe:2.3:a:nextcloud:nextcloud:::::::: Remediation Upgrade: 21.1.10moderate effort Upgrade: 22.0.11moderate effort Upgrade: 23.0.3moderate effort Workaround:low effort Disable the Talk app. Workaround:low effort Install the Nextcloud Talk High-performance Backend.
Nextcloud Talk	< 21.1.10 (semver) < 22.0.11 (semver) < 23.0.3 (semver)
CPE cpe:2.3:a:nextcloud:talk:::::::: Remediation Upgrade: 21.1.10moderate effort Upgrade: 22.0.11moderate effort Upgrade: 23.0.3moderate effort Workaround:low effort Disable the Talk app. Workaround:low effort Install the Nextcloud Talk High-performance Backend.

Change History

4 change records found show changes

Date	Action	Recorded By
Jul 22, 2026	CVE Translated	[email protected]
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Jun 1, 2026	New CVE Received	[email protected]