CVE-2025-58791: 
WordPress vulnerability analysis and mitigation

A Stored Cross-Site Scripting (XSS) vulnerability has been identified in Arjan Olsder SEO Auto Linker plugin versions through 1.5.3. The vulnerability was discovered by Que Thanh Tuan from Blue Rock and was disclosed on September 5, 2025. This security issue affects WordPress installations using the SEO Auto Linker plugin (Patchstack).

The vulnerability is classified as an Improper Neutralization of Input During Web Page Generation (CWE-79) issue. It has been assigned a CVSS v3.1 base score of 5.9 (Medium), with the following vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:L. The attack vector is network-based, requires high privileges and user interaction, with changed scope and low impact on confidentiality, integrity, and availability (NVD, AttackerKB).

The vulnerability could allow a malicious actor with administrator privileges to inject malicious scripts, including redirects, advertisements, and other HTML payloads into the website. These injected scripts would be executed when visitors access the affected site (Patchstack).

As of the disclosure date, no official fix has been released for this vulnerability. Given the low severity impact and requirement for administrative access, the vulnerability is considered unlikely to be exploited (Patchstack).