What is CVE-2025-13737?

CVE-2025-13737 is a medium-severity vulnerability in Nextendweb Nextend Social Login And Register, classified under Cross-Site Request Forgery (CSRF). CVSS score: 4.3/10. Published 2025-11-28.

How severe is CVE-2025-13737?

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

CSRF in Nextendweb Nextend Social Login And Register

CVE-2025-13737

The Nextend Social Login and Register plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 3.1.21. This is due to missing or incorrect nonce validation on the 'unlinkUser' function. This makes it possible for unauthenticated attackers to unlink the user's social login via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Vulnerability class: CSRF (Cross-Site Request Forgery)

EPSS: 0.001 (4.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

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

Affected products

Nextendweb Nextend Social Login And Register — versions 0

Weakness classification (CWE)

CWE-352 — Cross-Site Request Forgery (CSRF)

References

Frequently asked questions

What is CVE-2025-13737?: CVE-2025-13737 is a medium-severity vulnerability in Nextendweb Nextend Social Login And Register, classified under Cross-Site Request Forgery (CSRF). CVSS score: 4.3/10. Published 2025-11-28.
How severe is CVE-2025-13737?: Medium severity. CVSS v3 base score is 4.3 out of 10.