CVE-2025-13737

Nextend Social Login and Register <= 3.1.21 - Cross-Site Request Forgery to Unlink User Social Login

4.3 Medium

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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: None
Integrity: Low
Availability: None

Exploit likelihood

0.16%Up 0.1 points since Nov 28, 2025

What each source reports

CVE List Score used 4.3

Nextend Social Login and Register <= 3.1.21 - Cross-Site Request Forgery to Unlink User Social Login

Record: CVE-2025-13737
CVSS 3.1: 4.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Weakness: CWE-352
Updated: 2026-11-02

EUVDEUVD-2025-199854 4.3

Record: EUVD-2025-199854
CVSS 3.1: 4.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-f85c-2x25-hppv 4.3

The Nextend Social Login and Register plugin for WordPress is vulnerable to Cross-Site Request...

Record: GHSA-f85c-2x25-hppv
CVSS 3.1: 4.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Weakness: CWE-352
Updated: 2026-11-02

NVD 4.3

Record: CVE-2025-13737
CVSS 3.1: 4.3 MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Weakness: CWE-352
Updated: 2026-11-02

Affected products

nextendweb nextend social login and register

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2025-13737 is a medium vulnerability (CVSS 4.3) in Nextendweb Nextend Social Login And Register, published November 28, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.16%, the 5th percentile. No source names a fixed version.