What is CVE-2023-39963?

CVE-2023-39963 is a high-severity vulnerability in Nextcloud Security-advisories, classified under Improper Access Control. CVSS score: 8.1/10. Published 2023-08-10.

How severe is CVE-2023-39963?

High severity. CVSS v3 base score is 8.1 out of 10.

Vulnerability in Nextcloud Security-advisories

CVE-2023-39963

Nextcloud Server provides data storage for Nextcloud, an open source cloud platform. Starting in version 20.0.0 and prior to versions 20.0.14.15, 21.0.9.13, 22.2.10.14, 23.0.12.8, 24.0.12.5, 25.0.9, 26.0.4, and 27.0.1, a missing password c…

EPSS: 0.002 (35.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:L.

Affected products

Nextcloud Security-advisories — versions >= 20.0.0, < 20.0.14.15, >= 21.0.0, < 21.0.9.13, >= 22.0.0, < 22.2.10.14

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

https://github.com/nextcloud/security-advisories/security/advisories/GHSA-j4qm-5q5x-54m5 (x_refsource_CONFIRM)
https://github.com/nextcloud/server/pull/39416 (x_refsource_MISC)
https://hackerone.com/reports/2067572 (x_refsource_MISC)

Frequently asked questions

What is CVE-2023-39963?: CVE-2023-39963 is a high-severity vulnerability in Nextcloud Security-advisories, classified under Improper Access Control. CVSS score: 8.1/10. Published 2023-08-10.
How severe is CVE-2023-39963?: High severity. CVSS v3 base score is 8.1 out of 10.