What is CVE-2025-14540?

CVE-2025-14540 is a medium-severity vulnerability in Userback, classified under Missing Authorization. CVSS score: 4.3/10. Published 2025-12-13.

How severe is CVE-2025-14540?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Userback

CVE-2025-14540

The Userback plugin for WordPress is vulnerable to unauthorized access of data due to a missing capability check on the userback_get_json function in all versions up to, and including, 1.0.15. This makes it possible for authenticated attackers, with Subscriber-level access and above, to extract plugin's configuration data including the Userback API access token and site's posts/pages contents, including those that have private and draft status.

Vulnerability class: Broken Access Control

EPSS: 0.002 (11.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

Userback — versions 0

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

Frequently asked questions

What is CVE-2025-14540?: CVE-2025-14540 is a medium-severity vulnerability in Userback, classified under Missing Authorization. CVSS score: 4.3/10. Published 2025-12-13.
How severe is CVE-2025-14540?: Medium severity. CVSS v3 base score is 4.3 out of 10.