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The vulnerability of cloud software for creating and using Nextcloud Server’s data storage solution is related to improper access control, allowing attackers to circumvent existing access restrictions.

🗓️ 03 Apr 2024 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType 
bdu_fstec
 bdu_fstec🔗 bdu.fstec.ru👁 3 Views

Improper access control in Nextcloud Server lets attackers update storages and bypass restrictions.

Related
Detection
Refs
ReporterTitlePublishedViews
Family
Circl		CVE-2023-48239
10 Jun 202514:30
–circl
CNNVD		Nextcloud Security Breach
21 Nov 202300:00
–cnnvd
CVE		CVE-2023-48239
21 Nov 202321:02
–cve
Cvelist		CVE-2023-48239 Nextcloud Server users can make external storage mount points inaccessible for other users
21 Nov 202321:02
–cvelist
EUVD		EUVD-2023-52310
3 Oct 202520:07
–euvd
Nextcloud		Users can make external storage mount points inaccessible for other users
21 Nov 202305:27
–nextcloud
Hacker One		Nextcloud: Delete external storage of any user
17 Oct 202300:08
–hackerone
NVD		CVE-2023-48239
21 Nov 202321:15
–nvd
OpenVAS		Nextcloud Server < 20.0.14.16, 21.x < 21.0.9.13, 22.x < 22.2.10.15, 23.x < 23.0.12.12, 24.x < 24.0.12.8, 25.x < 25.0.13, 26.x < 26.0.8, 27.x < 27.1.3 Improper Access Control Vulnerability (GHSA-f962-hw26-g267)
22 Nov 202300:00
–openvas
OSV		CVE-2023-48239 Nextcloud Server users can make external storage mount points inaccessible for other users
21 Nov 202321:02
–osv
Rows per page
Vulners
Node
nextcloud_gmbhnextcloud_serverRange21.0.0–21.0.9.13
OR
nextcloud_gmbhnextcloud_serverRange20.0.0–20.0.14.16
OR
nextcloud_gmbhnextcloud_serverRange22.0.0–22.2.10.15
OR
nextcloud_gmbhnextcloud_serverRange23.0.0–23.0.12.12
OR
nextcloud_gmbhnextcloud_serverRange24.0.0–24.0.12.8
OR
nextcloud_gmbhnextcloud_serverRange25.0.0–25.0.13
OR
nextcloud_gmbhnextcloud_serverRange26.0.0–26.0.8
OR
nextcloud_gmbhnextcloud_serverRange27.0.0–27.1.3

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27 May 2025 00:00Current
7.2High risk
Vulners AI Score7.2
CVSS 37.1
CVSS 27.5
EPSS0.0095
improper access controlnextcloud serverexternal storageupdate storagesaccess restrictions
3