Medium 5.3Published Jul 29, 2026

CVE-2026-4604Klubraum Membership Request <= 1.1.0 - Missing Authorization to Unauthenticated Arbitrary Plugin Settings Update

Updated under an hour ago (Oct 27, 2026, 3:00 AM ET)

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It affects Klubraum Membership Request. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Klubraum Membership Request

Exploited in the last 30 days

The Klubraum Membership Request plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the `kr_mr_store_settings()` function in all versions up to, and including, 1.1.0. This makes it possible for unauthenticated attackers to update the plugin's settings, including the Klubraum API token and introduction text, effectively hijacking the plugin's integration with the Klubraum service.

CVSS: 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Weakness (CWE): CWE-862
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Wordfence
NVD analysis: Deferred
Record last updated: Jul 29, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

klubraum Klubraum Membership Request klubraum:membership_request (from the name)	through 1.1.0	CNA record

References

References

https://www.wordfence.com/threat-intel/vulnerabilities/id/09e158d2-f9a6-41a6-a91f-1763a1a44b04?source=cve
https://plugins.trac.wordpress.org/browser/klubraum-membership-request/trunk/admin/class-klubraum-membership-request-widget-admin.php#L152
https://plugins.trac.wordpress.org/browser/klubraum-membership-request/tags/1.1.0/admin/class-klubraum-membership-request-widget-admin.php#L152
https://plugins.trac.wordpress.org/browser/klubraum-membership-request/tags/1.1.0/admin/class-klubraum-membership-request-widget-admin.php#L151
https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=3491619%40klubraum-membership-request%2Ftrunk%2Fadmin%2Fclass-klubraum-membership-request-widget-admin.php&old=2512635%40klubraum-membership-request%2Ftrunk%2Fadmin%2Fclass-klubraum-membership-request-widget-admin.php

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.