VULNERABILITY INTELLIGENCE

CVE-2021-22906

CVSS score6.5 MEDIUM

EPSS probability0.72%

CISA KEVNot currently listed

Published2021-06-11

Last modified2026-06-17

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

Description

Nextcloud End-to-End Encryption before 1.5.3, 1.6.3 and 1.7.1 suffers from a denial of service vulnerability due to permitting any authenticated users to lock files of other users.

Weakness classification

support@hackerone.com: CWE-400
nvd@nist.gov: CWE-639

Primary references

support@hackerone.com — Third Party Advisory
support@hackerone.com — Exploit, Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 — Exploit, Issue Tracking, Third Party Advisory