CVE-2021-22896

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.

Category

4.3
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.30%
Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory hackerone.com
Affected: n/a Nextcloud Mail
Published at:
Updated at:

References

Link Tags
https://hackerone.com/reports/1129996 third party advisory
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-jmgp-77jq-fjp3 third party advisory
https://github.com/nextcloud/mail/pull/4864 third party advisory patch
https://github.com/nextcloud/mail/releases/tag/v1.9.5 third party advisory release notes

Frequently Asked Questions

What is the severity of CVE-2021-22896?
CVE-2021-22896 has been scored as a medium severity vulnerability.
How to fix CVE-2021-22896?
To fix CVE-2021-22896, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-22896 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-22896 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-22896?
CVE-2021-22896 affects n/a Nextcloud Mail.
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