CVE-2025-11448 is a vulnerability classified under CWE-862 (Missing Authorization) found in the Envira Photo Gallery plugin for WordPress, developed by smub. The flaw exists in the REST API endpoint '/envira-convert/v1/bulk-convert', which lacks proper capability checks to verify if the authenticated user has sufficient permissions to perform bulk gallery conversions. This allows any authenticated user with contributor-level access or higher to modify gallery data by converting galleries to Envira galleries without authorization. The vulnerability affects all versions up to and including 1.11.0. The CVSS v3.1 base score is 4.3 (medium), reflecting that the attack vector is network-based, requires low attack complexity, privileges at the level of a contributor, no user interaction, and impacts integrity but not confidentiality or availability. The vulnerability does not allow unauthenticated access, limiting the attack scope to users with some level of access to the WordPress backend. No known public exploits or patches are available as of the publication date. The issue could be exploited to alter gallery content, potentially leading to unauthorized content changes or defacement, which may affect the trustworthiness and integrity of websites using this plugin.

For European organizations, the primary impact of CVE-2025-11448 is the unauthorized modification of gallery content on WordPress sites using the Envira Photo Gallery plugin. This can undermine data integrity, potentially damaging brand reputation, user trust, and content reliability. While the vulnerability does not expose sensitive data or cause service disruption, unauthorized content changes could be leveraged in disinformation campaigns or to inject misleading visual content. Organizations relying on WordPress for marketing, e-commerce, or media publishing are at risk of content tampering. Since exploitation requires contributor-level access, insider threats or compromised user accounts pose a significant risk. The impact is more pronounced for organizations with large digital content portfolios or those in sectors where content authenticity is critical, such as media, education, and government communications.

European organizations should immediately audit user roles and permissions within their WordPress installations to ensure that contributor-level access is granted only to trusted users. Restrict contributor privileges where possible and monitor for unusual activity on the '/envira-convert/v1/bulk-convert' endpoint via web application firewalls or logging tools. Implement multi-factor authentication (MFA) to reduce the risk of account compromise. Until a patch is released, consider disabling or restricting access to the vulnerable REST API endpoint using custom rules or plugins that control REST API permissions. Regularly update the Envira Photo Gallery plugin once a security update becomes available. Additionally, conduct periodic security reviews of all installed plugins to identify and mitigate similar authorization issues proactively.