Home/CVE/Nextcloud Mail before 1.9.5 suffers from improper access control due to a missing permission check allowing other authen
CVE

CVE-2021-22896

Nextcloud Mail before 1.9.5 suffers from improper access control due to a missing permission check allowing other authen

Nextcloud Mail before 1.9.5 suffers from improper access control due to a missing permission check allowing other authenticated users to create mail aliases for other users.

MEDIUM · CVSS 4.3 EPSS 0.00409
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-862Missing Authorization
CWE-862Missing Authorization
▤

Affected Products & Versions

1
nextcloud< 1.9.5
▣

Scoring & Timeline

4.3
MEDIUM · CVSS v3.1 · support@hackerone.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD11 Jun 2021 · 04:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/nextcloud/mail/pull/4864PatchThird Party Advisory
https://github.com/nextcloud/mail/releases/tag/v1.9.5Release NotesThird Party Advisory
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jmgp-77jq-fjp3Third Party Advisory
https://hackerone.com/reports/1129996Third Party Advisory
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