What is CVE-2023-48239?

CVE-2023-48239 is a high-severity vulnerability in Nextcloud Security-advisories, classified under Improper Access Control. CVSS score: 8.5/10. Published 2023-11-21.

How severe is CVE-2023-48239?

High severity. CVSS v3 base score is 8.5 out of 10.

Vulnerability in Nextcloud Security-advisories

CVE-2023-48239

Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 25.0.0 and prior to versions 25.0.13, 26.0.8, and 27.1.3 of Nextcloud Server and starting in version 20.0.0 and prior to versions 20.0…

EPSS: 0.006 (69.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H.

Affected products

Nextcloud Security-advisories — versions >= 25.0.0, < 25.0.13, >= 26.0.0, < 26.0.8, >= 27.0.0, < 27.1.3

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-f962-hw26-g267 (x_refsource_CONFIRM)
https://github.com/nextcloud/server/pull/41123 (x_refsource_MISC)
https://hackerone.com/reports/2212627 (x_refsource_MISC)

Frequently asked questions

What is CVE-2023-48239?: CVE-2023-48239 is a high-severity vulnerability in Nextcloud Security-advisories, classified under Improper Access Control. CVSS score: 8.5/10. Published 2023-11-21.
How severe is CVE-2023-48239?: High severity. CVSS v3 base score is 8.5 out of 10.