Vulnerability in Nextcloud Security-advisories

CVE-2023-39953

user_oidc provides the OIDC connect user backend for Nextcloud, an open-source cloud platform. Starting in version 1.0.0 and prior to version 1.3.3, missing verification of the issuer would have allowed an attacker to perform a man-in-the-…

EPSS: 0.004 (36.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2023-39953?
CVE-2023-39953 is a medium-severity vulnerability in Nextcloud Security-advisories, classified under Incorrect Implementation of Authentication Algorithm. CVSS score: 4.8/10. Published 2023-08-10.
How severe is CVE-2023-39953?
Medium severity. CVSS v3 base score is 4.8 out of 10.