CVE-2023-28644

Name: CVE-2023-28644
Creator: NVD / NIST
Published: 2023-03-30T19:15:06.687+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.62%

Last modified Jun 17, 2026

CVE-2023-28644 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Nextcloud server is an open source home cloud implementation. In releases of the 25.0.x branch before 25.0.3 an inefficient fetch operation may impact server performances and/or can lead to a denial of service. EPSS estimates a 0.62% chance of exploitation in the next 30 days.

Description

Nextcloud server is an open source home cloud implementation. In releases of the 25.0.x branch before 25.0.3 an inefficient fetch operation may impact server performances and/or can lead to a denial of service. This issue has been addressed and it is recommended that the Nextcloud Server is upgraded to 25.0.3. There are no known workarounds for this vulnerability.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.62%

45.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-400

Affected Software

Vendor	Product	Versions
Nextcloud	Nextcloud Server	>= 25.0.0, < 25.0.3

References

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-9wmj-gp8v-477jVendor Advisory
https://github.com/nextcloud/server/pull/36016Issue Tracking, Patch
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-9wmj-gp8v-477jVendor Advisory
https://github.com/nextcloud/server/pull/36016Issue Tracking, Patch

Timeline

Published: Mar 30, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-28644?

How severe is CVE-2023-28644?

CVE-2023-28644 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.62% probability of exploitation in the next 30 days.

How do I fix CVE-2023-28644?

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-2023-28644?

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

Scan your code now

Source: NVD / NIST