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
- Nextcloud Security-advisories — versions >= 1.0.0, < 1.3.3
- Nextcloud User_oidc
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Patch, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Permissions Required, x_refsource_MISC)
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.