CVE-2023-48303

Name: CVE-2023-48303
Creator: NVD / NIST
Published: 2023-11-21T22:15:07.893+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

LOWCVSS 2.7/10EPSS 0.67%

Last modified Jun 17, 2026

CVE-2023-48303 is a low-severity vulnerability rated 2.7/10 on the CVSS scale. 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 Nextcloud Enterprise Server, admins can change authentication details of user configured external storage. EPSS estimates a 0.67% chance of exploitation in the next 30 days.

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 Nextcloud Enterprise Server, admins can change authentication details of user configured external storage. Nextcloud Server and Nextcloud Enterprise Server versions 25.0.11, 26.0.6, and 27.1.0 contain a patch for this issue. No known workarounds are available.

Metrics

CVSS 3.1

2.7/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N

EPSS Probability

0.67%

47.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-284

Affected Software

Vendor	Product	Versions
Nextcloud	Nextcloud Server	>= 25.0.0, < 25.0.11
Nextcloud	Nextcloud Server	>= 26.0.0, < 26.0.6
Nextcloud	Nextcloud Server	>= 27.0.0, < 27.1.0

References

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-2448-44rp-c7hhVendor Advisory
https://github.com/nextcloud/server/pull/39895Issue Tracking, Patch
https://hackerone.com/reports/2107934Permissions Required
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-2448-44rp-c7hhVendor Advisory
https://github.com/nextcloud/server/pull/39895Issue Tracking, Patch
https://hackerone.com/reports/2107934Permissions Required

Timeline

Published: Nov 21, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-48303?

How severe is CVE-2023-48303?

CVE-2023-48303 has a CVSS score of 2.7/10 (LOW severity). The EPSS model estimates a 0.67% probability of exploitation in the next 30 days.

How do I fix CVE-2023-48303?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-48303?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST