CVE-2026-45266

3.5 lowEPSS 0.2%

Low (3.5). EPSS 0.2% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

3.5 low

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

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 10% of CVEs (scores of 2026-10-31)
CWE: CWE-284
Published: 2026-06-01
Modified: 2026-07-22
Record from: the NVD, synced 2026-10-19

References

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-x75r-65hm-cw35
https://github.com/nextcloud/spreed/pull/17577
https://hackerone.com/reports/3636758

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