CVE-2025-62150 identifies a missing authorization vulnerability (CWE-862) in the Themesawesome History Timeline plugin, versions up to 1.0.6. This vulnerability arises from incorrectly configured access control mechanisms that fail to properly verify whether a user has the necessary permissions to perform certain actions within the plugin. Specifically, an attacker with low-level privileges (PR:L) can exploit this flaw over the network (AV:N) without requiring user interaction (UI:N) to modify timeline data or settings that should be restricted. The vulnerability impacts data integrity (I:L) but does not affect confidentiality (C:N) or availability (A:N). The scope is unchanged (S:U), meaning the exploit affects only the vulnerable component and does not extend to other system components. No patches are currently listed, and no known exploits have been observed in the wild, indicating this is a newly disclosed issue. The vulnerability is significant for organizations relying on this plugin for content presentation, as unauthorized modifications could lead to misinformation or manipulation of historical data timelines. The medium CVSS score of 4.3 reflects moderate risk, balancing ease of exploitation with limited impact scope.

For European organizations using the Themesawesome History Timeline plugin, this vulnerability poses a risk of unauthorized data modification, which can undermine the integrity of published timelines and potentially damage organizational credibility. While it does not expose sensitive data or disrupt service availability, the ability for low-privilege users to alter timeline content could be exploited for misinformation or defacement. This is particularly impactful for sectors relying on accurate historical or event data presentation, such as education, media, cultural institutions, and government agencies. The risk is heightened in environments where user privilege management is lax or where the plugin is exposed to external networks. Although no active exploitation is reported, the vulnerability could be leveraged in targeted attacks or combined with other vulnerabilities to escalate impact. The medium severity suggests a moderate but manageable threat level, requiring attention but not immediate crisis response.

European organizations should immediately review and tighten access control configurations within the Themesawesome History Timeline plugin, ensuring that only authorized users have permissions to modify timeline data. Implement role-based access controls (RBAC) and audit user privileges to minimize exposure. Monitor plugin usage logs for unusual modification attempts or unauthorized access patterns. Since no official patch is currently available, consider temporarily disabling the plugin or restricting its network accessibility until a fix is released. Engage with the vendor or community to track patch releases and apply updates promptly. Additionally, conduct security awareness training for administrators managing the plugin to recognize and prevent privilege misuse. Employ web application firewalls (WAFs) to detect and block suspicious requests targeting the plugin endpoints. Finally, maintain regular backups of timeline data to enable restoration in case of unauthorized changes.