What is CVE-2026-45266?

CVE-2026-45266 is a low-severity vulnerability in Nextcloud Security-advisories, classified under Improper Access Control. CVSS score: 3.5/10. Published 2026-06-01.

How severe is CVE-2026-45266?

Low severity. CVSS v3 base score is 3.5 out of 10.

Vulnerability in Nextcloud Security-advisories

CVE-2026-45266

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 i…

EPSS: 0.000 (7.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.5 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N.

Affected products

Nextcloud Security-advisories — versions < 21.1.10, < 22.0.11, < 23.0.3

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

security-advisories@github.com (x_refsource_CONFIRM)
security-advisories@github.com (x_refsource_MISC)
security-advisories@github.com (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-45266?: CVE-2026-45266 is a low-severity vulnerability in Nextcloud Security-advisories, classified under Improper Access Control. CVSS score: 3.5/10. Published 2026-06-01.
How severe is CVE-2026-45266?: Low severity. CVSS v3 base score is 3.5 out of 10.