CVE-2021-39223
4.8 MEDIUMNextcloud is an open-source, self-hosted productivity platform
Published: 2021-10-25 · Last updated: 2026-06-17
Severity and scoring
- CVSS
- 4.8 MEDIUM
- Vector
- CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N
- CWE
- CWE-200
Affected products
| Vendor | Product |
|---|---|
| nextcloud | richdocuments |
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.
Source: NVD
References
- [NVD]https://nvd.nist.gov/vuln/detail/CVE-2021-39223
- [Patch]https://github.com/nextcloud/richdocuments/pull/1760
- [Other]https://github.com/nextcloud/security-advisories/security/advisories/GHSA-rjcc-4cgj-6v93
- [Other]https://hackerone.com/reports/1253460
- [Patch]https://github.com/nextcloud/richdocuments/pull/1760
- [Other]https://github.com/nextcloud/security-advisories/security/advisories/GHSA-rjcc-4cgj-6v93
- [Other]https://hackerone.com/reports/1253460
Related CVEs
Same vendor
- CVE-2026-45810 — Nextcloud is an open source content collaboration platform (6.8 MEDIUM)
- CVE-2026-45722 — Nextcloud is an open source content collaboration platform (7.1 HIGH)
- CVE-2026-45691 — Nextcloud is an open source content collaboration platform (5.9 MEDIUM)
- CVE-2026-45690 — Nextcloud is an open source content collaboration platform (5.9 MEDIUM)
- CVE-2026-45545 — Nextcloud is an open source content collaboration platform (8.2 HIGH)
Same CWE
- CVE-2026-12117 — Improper access control in the social login connection endpoint in Devolutions Server 2026.2.5 allows an authenticated vault member to ...
- CVE-2026-12320 — Information disclosure in the Password Manager component (4.3 MEDIUM)
- CVE-2026-12311 — Information disclosure, sandbox escape in the Security: Process Sandboxing component (4.7 MEDIUM)
- CVE-2026-50870 — An information disclosure vulnerability in the configuration endpoint of Ben Busby whoogle-search v1.2.3 allows attackers to obtain sensi... (7.5 HIGH)
- CVE-2026-39007 — An issue in Observeinc's Observe v.2026-01-28 and before allows a remote attacker to obtain sensitive information via the CSV Log export ... (7.5 HIGH)