Vulnerability Description
Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.11, 20.0.10, and 21.0.2, an attacker is able to convert a Files Drop link to a federated share. This causes an issue on the UI side of the sharing user. When the sharing user opens the sharing panel and tries to remove the "Create" privileges of this unexpected share, Nextcloud server would silently grant the share read privileges. The vulnerability is patched in versions 19.0.11, 20.0.10 and 21.0.2. No workarounds are known to exist.
CVSS Score
LOW
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Nextcloud | Nextcloud Server | < 19.0.11 |
Related Weaknesses (CWE)
References
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-grph-cThird Party Advisory
- https://hackerone.com/reports/1167929Permissions RequiredThird Party Advisory
- https://security.gentoo.org/glsa/202208-17Third Party Advisory
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-grph-cThird Party Advisory
- https://hackerone.com/reports/1167929Permissions RequiredThird Party Advisory
- https://security.gentoo.org/glsa/202208-17Third Party Advisory
FAQ
What is CVE-2021-32655?
CVE-2021-32655 is a vulnerability with a CVSS score of 3.5 (LOW). Nextcloud Server is a Nextcloud package that handles data storage. In versions prior to 19.0.11, 20.0.10, and 21.0.2, an attacker is able to convert a Files Drop link to a federated share. This causes...
How severe is CVE-2021-32655?
CVE-2021-32655 has been rated LOW with a CVSS base score of 3.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-32655?
Check the references section above for vendor advisories and patch information. Affected products include: Nextcloud Nextcloud Server.