CVE-2021-22896
MEDIUM
4.3
CVSS Score
Published: June 11, 2021 at 03:49 PM UTC
Updated: June 17, 2026 at 03:37 AM UTC
1 product affected across 1 vendorNextcloud/server
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Severity
MEDIUM4.3
Exploit prediction
EPSS 1.0%
Description
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Nextcloud/server· Nextcloudnextcloud-app
95%v < 1.9.5
Vendor states this is fixed in 1.9.5 (unaffected)
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (4)
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/nextcloud/mail/pull/4864x_refsource_MISCRelease NotesThird Party Advisory
Source: [email protected]
https://github.com/nextcloud/mail/releases/tag/v1.9.5x_refsource_MISCThird Party Advisory
Source: [email protected]
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jmgp-77jq-fjp3CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- LOW
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-862
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