CVE-2021-32652 Missing permission check on email metadata retrieval
Authenticated users can access other users' mail metadata due to missing permission checks in Nextcloud Mail.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-32652?
CVE-2021-32652 is a high-severity missing authorization vulnerability in nextcloud security-advisories, published on 1 Jun 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Nextcloud Mail is a mail app for the Nextcloud platform. A missing permission check in Nextcloud Mail before 1.4.3 and 1.8.2 allows another authenticated users to access mail metadata of other users. Versions 1.4.3 and 1.8.2 contain patches for this vulnerability; no workarounds other than the patches are known to exist.
Which versions are affected by CVE-2021-32652?
It affects 1 product.
Products include Nextcloud Mail.
How do I fix CVE-2021-32652?
No fix has been published for CVE-2021-32652 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2021-32652 being exploited?
There is no known exploitation of CVE-2021-32652 in the wild and no public exploit code.
Other vulnerabilities in nextcloud security-advisories
- CVE-2022-31132 Unauthenticated SSRF in 3rd party module "cerdic/csstidy"
- CVE-2024-52508 Nextcloud Mail auto configurator can be tricked into sending account information to wrong servers
- CVE-2023-23943 Blind SSRF via server URL input in the Nextcloud Mail app
- CVE-2023-45660 Require strict cookies for image proxy requests in Nextcloud Mail
- CVE-2021-32707 Bypass of image blocking in Nextcloud Mail
Sources
Also known as GHSA-mxx2-6rg9-v2vc.