Vulnerability · Published Jul 29, 2026 · Assigned by Wordfence

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

Medium 5.3

In plain English

A medium-severity missing authorization in Klubraum Membership Request from klubraum. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.4%top 65.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
klubraum	Klubraum Membership Request	0 – through 1.1.0

Weakness: CWE-862 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

In plain English

Official description

Affected products (as reported)

References