CVE-2023-28834

Name: CVE-2023-28834
Creator: NVD / NIST
Published: 2023-04-03T17:15:06.883+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.81%

Last modified Jun 17, 2026

CVE-2023-28834 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. Nextcloud Server is an open source personal cloud server. Nextcloud Server 24.0.0 until 24.0.6 and 25.0.0 until 25.0.4, as well as Nextcloud Enterprise Server 23.0.0 until 23.0.11, 24.0.0 until 24.0.6, and 25.0.0 until 25.0.4, have an information disclosure vulnerability. EPSS estimates a 0.81% chance of exploitation in the next 30 days.

Description

Nextcloud Server is an open source personal cloud server. Nextcloud Server 24.0.0 until 24.0.6 and 25.0.0 until 25.0.4, as well as Nextcloud Enterprise Server 23.0.0 until 23.0.11, 24.0.0 until 24.0.6, and 25.0.0 until 25.0.4, have an information disclosure vulnerability. A user was able to get the full data directory path of the Nextcloud server from an API endpoint. By itself this information is not problematic as it can also be guessed for most common setups, but it could speed up other unknown attacks in the future if the information is known. Nextcloud Server 24.0.6 and 25.0.4 and Nextcloud Enterprise Server 23.0.11, 24.0.6, and 25.0.4 contain patches for this issue. There are no known workarounds.

Metrics

CVSS 3.1

4.3/10

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

EPSS Probability

0.81%

52.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-212

Affected Software

Vendor	Product	Versions
Nextcloud	Nextcloud Server	>= 23.0.0, < 23.0.14
Nextcloud	Nextcloud Server	>= 24.0.0, < 24.0.10
Nextcloud	Nextcloud Server	>= 25.0.0, < 25.0.4

References

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-5w64-6c42-rgcvVendor Advisory
https://github.com/nextcloud/server/issues/33883Exploit, Issue Tracking, Third Party Advisory
https://github.com/nextcloud/server/pull/36094Patch
https://hackerone.com/reports/1690510Exploit, Issue Tracking, Patch, Third Party Advisory
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-5w64-6c42-rgcvVendor Advisory
https://github.com/nextcloud/server/issues/33883Exploit, Issue Tracking, Third Party Advisory
https://github.com/nextcloud/server/pull/36094Patch
https://hackerone.com/reports/1690510Exploit, Issue Tracking, Patch, Third Party Advisory

Timeline

Published: Apr 3, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-28834?

How severe is CVE-2023-28834?

CVE-2023-28834 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.81% probability of exploitation in the next 30 days.

How do I fix CVE-2023-28834?

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-2023-28834?

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

Scan your code now

Source: NVD / NIST