CVE-2026-66623: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Inisev Social Media & Share Icons

This vulnerability, identified as CWE-79, involves improper neutralization of input during web page generation in the Social Media & Share Icons plugin by Inisev. Versions up to 2.9.9 are affected. The issue allows unauthenticated attackers to perform cross-site scripting attacks, potentially leading to partial confidentiality, integrity, and availability impacts. The CVSS 3.1 base score is 7.1, reflecting network attack vector, low attack complexity, no privileges required, user interaction required, and impacts on confidentiality, integrity, and availability.

Successful exploitation can lead to execution of malicious scripts in the context of the affected web application, potentially resulting in partial disclosure of information, modification of data, and disruption of service availability. The vulnerability is exploitable remotely without authentication but requires user interaction.

No official patch or remediation level has been published yet. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should consider applying any recommended temporary mitigations from the vendor or restrict exposure of the vulnerable plugin if possible.