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

2026-07-28 21:17

Md. Moniruzzaman Prodhan (NomanProdhan)

Strategic Overview

Status

Patched in 1.1.1

Affected PluginKlubraum Membership Request

Affected Version<= 1.1.0

CVSS5.3Medium

CVECVE-2026-4604

View all Klubraum Membership Request vulnerabilities

Vulnerability Overview

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.

Technical Analysis

REMEDIATION: Update to version 1.1.1, or a newer patched version --- IDENTIFIER: CWE-862 (Missing Authorization) The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

External References

https://www.cve.org/CVERecord?id=CVE-2026-4604 https://www.wordfence.com/threat-intel/vulnerabilities/id/09e158d2-f9a6-41a6-a91f-1763a1a44b04

CVSS Vector

5.3

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityNone
IntegrityLow
AvailabilityNone

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