CVE-2025-53350: 
WordPress vulnerability analysis and mitigation

A Cross-site Scripting (XSS) vulnerability has been identified in the WordPress Calendar Plus plugin, tracked as CVE-2025-53350. The vulnerability was discovered and disclosed on October 22, 2025, affecting Calendar Plus versions up to and including 1.2.4. This security flaw involves improper neutralization of input during web page generation (NVD).

The vulnerability is classified as a Reflected Cross-Site Scripting (XSS) issue, categorized under CWE-79 (Improper Neutralization of Input During Web Page Generation). According to CISA's assessment, the vulnerability has received a CVSS v3.1 base score of 7.1 (HIGH) with the following vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L (NVD).

The vulnerability allows attackers to execute reflected XSS attacks, potentially compromising the confidentiality, integrity, and availability of the affected system. The CVSS scoring indicates low impacts across confidentiality, integrity, and availability, but the overall severity is rated as HIGH due to the network attack vector and low complexity of exploitation (NVD).

Users of the Calendar Plus WordPress plugin should upgrade to a version newer than 1.2.4 once available. In the meantime, website administrators should implement additional security controls such as Web Application Firewalls (WAF) to help mitigate potential XSS attacks (Patchstack).