Medium severity4.8NVD Advisory· Published Oct 25, 2021· Updated Jun 17, 2026
CVE-2021-39223
CVE-2021-39223
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
4cpe:2.3:a:nextcloud:richdocuments:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:nextcloud:richdocuments:*:*:*:*:*:*:*:*range: <3.8.6
- (no CPE)range: <3.8.6, <4.2.3
- nextcloud/security-advisoriesv5Range: < 3.8.6,
Patches
Vulnerability mechanics
References
3- github.com/nextcloud/richdocuments/pull/1760nvdPatchThird Party Advisory
- github.com/nextcloud/security-advisories/security/advisories/GHSA-rjcc-4cgj-6v93nvdThird Party Advisory
- hackerone.com/reports/1253460nvdPermissions RequiredThird Party Advisory
News mentions
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