CVE-2021-22906 json
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 authenti…
published 2021-06-11 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-10035
- cvss
- 6.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 54%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- nextcloud end-to-end_encryption 1.5.3, 1.6.3, 1.7.1
Exploit prediction
0.72% chance of exploitation in the next 30 days, higher than 54% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- hackerone.com https://hackerone.com/reports/1189174 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:N/I:N/A:P |
Affected products
- n/a Nextcloud End-to-End Encryption
Classification
References
-
hackerone.com
/reports/1189174
exploit, issue-tracking, third-party-advisory
-
github.com
/nextcloud/security-advisories/security/advisories/GHSA-3829-45wm-ww36
third-party-advisory
Sources
- CVE List CVE-2021-22906
- NVD CVE-2021-22906
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