CVE-2021-39223

MEDIUM

Nextcloud Richdocuments < 3.8.6 - Sensitive Information Exposure via Exception Message

Title source: llm
STIX 2.1

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.

References (3)

Core 3
Core References
Patch, Third Party Advisory x_refsource_misc
https://github.com/nextcloud/richdocuments/pull/1760
Permissions Required, Third Party Advisory x_refsource_misc
https://hackerone.com/reports/1253460

Scores

CVSS v3 4.8
EPSS 0.0035
EPSS Percentile 57.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:N/A:N

Details

CWE
CWE-200
Status published
Products (1)
nextcloud/richdocuments < 3.8.6
Published Oct 25, 2021
Tracked Since Feb 18, 2026