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CVE-2023-48304 Details

Description

Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 25.0.0 and prior to versions 25.0.11, 26.0.6, and 27.1.0 of Nextcloud Server and starting in version 22.0.0 and prior to versions 22.2.10.16, 23.0.12.11, 24.0.12.7, 25.0.11, 26.0.6, and 27.1.0 of Nextcloud Enterprise Server, an attacker could enable and disable the birthday calendar for any user on the same server. Nextcloud Server 25.0.11, 26.0.6, and 27.1.0 and Nextcloud Enterprise Server 22.2.10.16, 23.0.12.11, 24.0.12.7, 25.0.11, 26.0.6, and 27.1.0 contain patches for this issue. No known workarounds are available.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:4.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

CNA: [email protected]CVSS-B:4.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8jwv-c8c8-9fr3	CVE	Vendor Advisory
https://github.com/nextcloud/server/pull/40292	CVE	Issue TrackingPatch
https://hackerone.com/reports/2112973	CVE	ExploitThird Party Advisory
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8jwv-c8c8-9fr3	[email protected]	Vendor Advisory
https://github.com/nextcloud/server/pull/40292	[email protected]	Issue TrackingPatch
https://hackerone.com/reports/2112973	[email protected]	ExploitThird Party Advisory

see all 6 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-639	Authorization Bypass Through User-Controlled Key	[email protected]

Affected Products

Product	Versions
nextcloud nextcloud server	>= 22.0.0, <= 22.2.10.16 >= 23.0.0, < 23.0.12.11 >= 24.0.0, < 24.0.12.7 >= 25.0.0, < 25.0.11 >= 26.0.0, < 26.0.6
CPE cpe:2.3:a:nextcloud:nextcloud_server:::::enterprise:::* cpe:2.3:a:nextcloud:nextcloud_server:::::-:::* Remediation No remediation found in references.

Change History

5 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Dec 1, 2023	Initial Analysis	[email protected]
Nov 21, 2023	New CVE Received	[email protected]