CVE-2023-39952
Nextcloud Server provides data storage for Nextcloud, an open source cloud platform.
Does this matter?
Lower severity and a low EPSS score (0.81%). Track it; it rarely justifies an emergency change on its own.
Description
Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 22.0.0 and prior to versions 22.2.10.13, 23.0.12.8, 24.0.12.4, 25.0.8, 26.0.3, and 27.0.1, a user can access files inside a subfolder of a groupfolder accessible to them, even if advanced permissions would block access to the subfolder. Nextcloud Server versions 25.0.8, 26.0.3, and 27.0.1 and Nextcloud Enterprise Server versions 22.2.10.13, 23.0.12.8, 24.0.12.4, 25.0.8, 26.0.3, and 27.0.1 contain a patch for this issue. No known workarounds are available.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 0.81% probability · 55th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-284
- Affected
- nextcloud/nextcloud server
- Source
- security-advisories@github.com
References
- https://github.com/nextcloud/groupfolders/issues/1906Issue Tracking, Third Party Advisory
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-cq8w-v4fh-4rjqPatch, Vendor Advisory
- https://github.com/nextcloud/server/pull/38890Patch
- https://hackerone.com/reports/1808079Permissions Required
- https://github.com/nextcloud/groupfolders/issues/1906Issue Tracking, Third Party Advisory
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-cq8w-v4fh-4rjqPatch, Vendor Advisory
- https://github.com/nextcloud/server/pull/38890Patch
- https://hackerone.com/reports/1808079Permissions Required
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.