Vulnerability Description
Nextcloud is an open-source, self-hosted productivity platform. The Nextcloud Richdocuments application prior to versions 3.8.6 and 4.2.3 returned verbatim exception messages to the user. This could result in a full path disclosure on shared files. (e.g. an attacker could see that the file `shared.txt` is located within `/files/$username/Myfolder/Mysubfolder/shared.txt`). It is recommended that the Richdocuments application is upgraded to 3.8.6 or 4.2.3. As a workaround, disable the Richdocuments application in the app settings.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Nextcloud | Richdocuments | < 3.8.6 |
Related Weaknesses (CWE)
References
- https://github.com/nextcloud/richdocuments/pull/1760PatchThird Party Advisory
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-rjcc-4Third Party Advisory
- https://hackerone.com/reports/1253460Permissions RequiredThird Party Advisory
- https://github.com/nextcloud/richdocuments/pull/1760PatchThird Party Advisory
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-rjcc-4Third Party Advisory
- https://hackerone.com/reports/1253460Permissions RequiredThird Party Advisory
FAQ
What is CVE-2021-39223?
CVE-2021-39223 is a vulnerability with a CVSS score of 4.8 (MEDIUM). Nextcloud is an open-source, self-hosted productivity platform. The Nextcloud Richdocuments application prior to versions 3.8.6 and 4.2.3 returned verbatim exception messages to the user. This could r...
How severe is CVE-2021-39223?
CVE-2021-39223 has been rated MEDIUM with a CVSS base score of 4.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-39223?
Check the references section above for vendor advisories and patch information. Affected products include: Nextcloud Richdocuments.