ZDF
Sign inSign up

Vulnerabilities

Vulnerability · 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.

Published Sep 20, 2025 · catalog updated Apr 8, 2026 · Custom Login And Signup Widget

Check this week

CVE-2025-9887 is not in CISA KEV. FIRST estimates a 13.00% chance of exploitation in the next 30 days. Check whether you run Custom Login And Signup Widget.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium4.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
13.00%
Remediation
Vendor / distro source
Affected products
vendor bittokazi Custom Login And Signup Widget 0 ≤1.0

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor bittokazi Custom Login And Signup Widget 0 ≤1.00 ≤1.0

How to fix CVE-2025-9887

  • Recommended remediation

    A vendor or distribution source is linked. Check that advisory for patch availability; this catalog does not invent fix status.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-9887 is not in CISA KEV. FIRST estimates a 13.00% chance of exploitation in the next 30 days. Check whether you run Custom Login And Signup Widget.

Which versions are affected?

Compare what you have installed with bittokazi Custom Login And Signup Widget 0 ≤1.0 0 ≤1.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 13.00%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Technology hubs

WordPress security

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Sep 20, 2025 · EUVD

    Detected

    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 perf

  2. Apr 8, 2026 · EUVD

    Updated

    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 perf

Sources

  • EUVDVulnerability recordEUVD-2025-30305

    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 attack

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Apr 8, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.