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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable yes

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
klubraum Klubraum Membership Request unaffected
Version Status Constraints
0 affected ≤ 1.1.0

No data.

No data.

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Vendors Products
Klubraum Subscribe
Klubraum Membership Request Subscribe
Wordpress Subscribe
Wordpress Subscribe

Project Subscriptions

Vendors Products
Klubraum Subscribe
Klubraum Membership Request Subscribe
Wordpress Subscribe
Wordpress Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://plugins.trac.wordpress.org/browser/klubraum-membership-request/tags/1.1.0/admin/class-klubraum-membership-request-widget-admin.php#L151 cve-icon
https://plugins.trac.wordpress.org/browser/klubraum-membership-request/tags/1.1.0/admin/class-klubraum-membership-request-widget-admin.php#L152 cve-icon
https://plugins.trac.wordpress.org/browser/klubraum-membership-request/trunk/admin/class-klubraum-membership-request-widget-admin.php#L152 cve-icon
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 cve-icon
https://www.wordfence.com/threat-intel/vulnerabilities/id/09e158d2-f9a6-41a6-a91f-1763a1a44b04?source=cve cve-icon
History

Wed, 29 Jul 2026 15:30:00 +0000

Type Values Removed Values Added
First Time appeared Klubraum
Klubraum klubraum Membership Request
Wordpress
Wordpress wordpress
Vendors & Products Klubraum
Klubraum klubraum Membership Request
Wordpress
Wordpress wordpress

Wed, 29 Jul 2026 12:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Wed, 29 Jul 2026 10:30:00 +0000

Type Values Removed Values Added
Description 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.
Title Klubraum Membership Request <= 1.1.0 - Missing Authorization to Unauthenticated Arbitrary Plugin Settings Update
Weaknesses CWE-862
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-07-29T12:10:02.325Z

Reserved: 2026-03-22T20:18:40.722Z

Link: CVE-2026-4604

cve-icon Vulnrichment

Updated: 2026-07-29T12:09:58.896Z

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-07-29T15:09:47Z

Weaknesses