CVE-2025-67533 is a stored Cross-site Scripting (XSS) vulnerability identified in the Themify Portfolio Post plugin for WordPress, affecting versions up to and including 1.3.0. The vulnerability stems from improper neutralization of user-supplied input during the generation of web pages, which allows an attacker to inject malicious JavaScript code that is stored persistently within the application’s data. When other users or administrators view the affected pages, the malicious script executes in their browsers, potentially leading to session hijacking, credential theft, or unauthorized actions performed with the victim’s privileges. The CVSS 3.1 vector indicates that the attack can be performed remotely over the network (AV:N) with low attack complexity (AC:L), requiring low privileges (PR:L) and user interaction (UI:R). The scope is changed (S:C), meaning the vulnerability affects resources beyond the initially vulnerable component. The impact affects confidentiality, integrity, and availability to a limited extent (C:L, I:L, A:L). Although no known exploits are reported in the wild, the presence of stored XSS in a popular WordPress plugin is a significant risk, especially for websites with multiple users or administrators. The vulnerability was published on December 9, 2025, and no official patches or fixes are currently linked, emphasizing the need for proactive mitigation. Stored XSS vulnerabilities are particularly dangerous because the malicious payload persists and can affect multiple users over time. The plugin is commonly used to showcase portfolio items on WordPress sites, which are prevalent in creative industries, agencies, and small to medium enterprises.

For European organizations, this vulnerability poses a moderate risk, especially for those relying on WordPress sites with the Themify Portfolio Post plugin installed. Exploitation can lead to theft of user credentials, session tokens, and potentially unauthorized actions performed on behalf of legitimate users, undermining trust and potentially leading to data breaches. The impact on confidentiality, integrity, and availability, while rated low to medium, can cascade if attackers leverage the XSS to deploy further attacks such as phishing or malware distribution. Organizations in sectors like e-commerce, media, and professional services that use WordPress extensively are at higher risk. Additionally, regulatory frameworks such as GDPR impose strict requirements on data protection, and exploitation of this vulnerability could lead to compliance violations and financial penalties. The requirement for low privileges and user interaction means that attackers might target less privileged users to escalate their impact. The lack of known exploits in the wild currently reduces immediate risk but does not eliminate the threat, especially as attackers often weaponize such vulnerabilities after disclosure.

1. Monitor official Themify and WordPress plugin repositories for patches and apply updates promptly once available. 2. Until a patch is released, consider disabling or removing the Themify Portfolio Post plugin if feasible. 3. Implement strict input validation and output encoding on all user-supplied data related to portfolio posts to prevent script injection. 4. Deploy Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts in browsers. 5. Use Web Application Firewalls (WAFs) with rules designed to detect and block XSS payloads targeting WordPress plugins. 6. Educate users and administrators about the risks of clicking on suspicious links or interacting with untrusted content. 7. Regularly audit WordPress installations and plugins for vulnerabilities and ensure minimal privilege principles are enforced for user accounts. 8. Employ security plugins that can scan for malicious code or suspicious activity within WordPress environments. 9. Conduct penetration testing focusing on stored XSS vectors to identify and remediate similar issues proactively. 10. Maintain comprehensive logging and monitoring to detect potential exploitation attempts early.