What is CVE-2025-9887?

CVE-2025-9887 is a medium-severity vulnerability in Bittokazi Custom Login And Signup Widget, classified under Cross-Site Request Forgery (CSRF). CVSS score: 4.3/10. Published 2025-09-20.

How severe is CVE-2025-9887?

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

Is CVE-2025-9887 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

CSRF in Bittokazi Custom Login And Signup Widget

CVE-2025-9887

The Custom Login And Signup Widget plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.0. This is due to missing or incorrect nonce validation in the /frndzk_adminclsw.php file. This makes it possible for unauthenticated attackers to change the email and username settings 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 (2.6th 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

Bittokazi Custom Login And Signup Widget — versions 0

Weakness classification (CWE)

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

Public proof-of-concept exploits

fkie-cad/nvd-json-data-feeds

References

Frequently asked questions

What is CVE-2025-9887?: CVE-2025-9887 is a medium-severity vulnerability in Bittokazi Custom Login And Signup Widget, classified under Cross-Site Request Forgery (CSRF). CVSS score: 4.3/10. Published 2025-09-20.
How severe is CVE-2025-9887?: Medium severity. CVSS v3 base score is 4.3 out of 10.
Is CVE-2025-9887 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.