Improper Access Control in Nextcloud Mail Product by Nextcloud
CVE-2021-22896

4.3MEDIUM

Key Information:

Vendor

Nextcloud
Status
Nextcloud Mail
Vendor
CVE Published:
11 June 2021

What is CVE-2021-22896?

Nextcloud Mail prior to version 1.9.5 is susceptible to a vulnerability characterized by improper access control measures. This deficiency allows authenticated users to create email aliases for other users without proper permissions, leading to unauthorized access and potential privacy violations. It is essential for administrators to apply the latest updates to safeguard against this security lapse.

Affected Version(s)

Nextcloud Mail Fixed in 1.9.5

References

https://hackerone.com/reports/1129996
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https://github.com/nextcloud/security-advisories/security...
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https://github.com/nextcloud/mail/pull/4864
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CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2021-22896 : Improper Access Control in Nextcloud Mail Product by Nextcloud