CVE-2021-39223
This could result in a full path disclosure on shared files.
Does this matter?
Lower severity and a low EPSS score (1.05%). Track it; it rarely justifies an emergency change on its own.
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 3.1
- 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 1.05% probability · 62th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-200
- Affected
- nextcloud/richdocuments
- Source
- security-advisories@github.com
References
- https://github.com/nextcloud/richdocuments/pull/1760Patch, Third Party Advisory
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-rjcc-4cgj-6v93Third Party Advisory
- https://hackerone.com/reports/1253460Permissions Required, Third Party Advisory
- https://github.com/nextcloud/richdocuments/pull/1760Patch, Third Party Advisory
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-rjcc-4cgj-6v93Third Party Advisory
- https://hackerone.com/reports/1253460Permissions Required, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.