CVE-2025-8392: 
WordPress vulnerability analysis and mitigation

The Mitfahrgelegenheit plugin for WordPress contains a Stored Cross-Site Scripting vulnerability (CVE-2025-8392) discovered and disclosed on September 11, 2025. The vulnerability affects all versions up to and including 1.1.5 of the plugin. The issue stems from insufficient input sanitization and output escaping of the 'date' parameter (NVD).

The vulnerability is classified as a Stored Cross-Site Scripting (CWE-79) issue with a CVSS v3.1 base score of 6.4 (Medium). The attack vector is network-based (AV:N) with low attack complexity (AC:L), requiring low privileges (PR:L) and no user interaction (UI:N). The scope is changed (S:C) with low confidentiality (C:L) and integrity (I:L) impacts, and no availability impact (A:N) (NVD).

When successfully exploited, this vulnerability allows authenticated attackers with Contributor-level access or higher to inject arbitrary web scripts into pages. These malicious scripts will execute whenever any user accesses the compromised page, potentially leading to theft of sensitive information or manipulation of page content (NVD, AttackerKB).

The plugin has been temporarily closed as of September 10, 2025, pending a full security review. Users are advised to disable and remove the Mitfahrgelegenheit plugin until a patched version is released (WordPress).