CVE-2025-57955 is a Missing Authorization vulnerability (CWE-862) identified in the WordPress plugin 'Post Carousel Slider for Elementor' developed by Plugin Devs. This vulnerability affects versions up to 1.7.0 and involves improperly configured access control mechanisms. Specifically, the plugin fails to enforce proper authorization checks on certain functionality, allowing users with limited privileges (requiring at least some level of authentication but not necessarily administrative rights) to perform actions that should be restricted. The CVSS 3.1 base score is 6.5 (medium severity), with the vector indicating network attack vector (AV:N), low attack complexity (AC:L), requiring privileges (PR:L), no user interaction (UI:N), unchanged scope (S:U), high confidentiality impact (C:H), no integrity impact (I:N), and no availability impact (A:N). This means an attacker with some authenticated access can remotely exploit the vulnerability without user interaction to gain unauthorized access to sensitive information or data within the plugin's scope, potentially exposing confidential content or configuration details. No known exploits are currently reported in the wild, and no patches have been linked yet, indicating that the vulnerability is newly disclosed and may require immediate attention from site administrators using this plugin. The vulnerability arises from incorrect or missing authorization checks in the plugin's code, which is a common security flaw that can lead to privilege escalation or data leakage if exploited.

For European organizations, this vulnerability poses a significant risk, especially for those relying on WordPress websites with the Elementor page builder and the Post Carousel Slider plugin installed. The high confidentiality impact means sensitive data displayed or managed via the plugin could be exposed to unauthorized users with limited privileges, potentially leading to data breaches or leakage of proprietary or personal information. This could affect e-commerce sites, corporate blogs, or any web presence using this plugin, undermining customer trust and possibly violating GDPR requirements regarding data protection and breach notification. Since the vulnerability does not affect integrity or availability, the primary concern is unauthorized data disclosure. However, the ease of exploitation (low complexity, network accessible) and lack of required user interaction increase the likelihood of exploitation attempts once the vulnerability becomes widely known. Organizations with multi-user WordPress environments where contributors or editors have some level of access are particularly at risk, as attackers could leverage compromised or low-privilege accounts to escalate access to sensitive data. The absence of a patch at the time of disclosure means organizations must act quickly to mitigate risk.

1. Immediate mitigation should include restricting user privileges to the minimum necessary, especially for users with authenticated access to WordPress admin or editor functions. 2. Monitor and audit user activities on WordPress sites to detect unusual access patterns or attempts to exploit the plugin. 3. Disable or remove the Post Carousel Slider for Elementor plugin if it is not essential, until a security patch is released. 4. Implement Web Application Firewall (WAF) rules to detect and block suspicious requests targeting the plugin endpoints. 5. Keep WordPress core, themes, and other plugins updated to reduce the attack surface. 6. Once a patch is available, prioritize its deployment after testing in a staging environment. 7. Consider isolating sensitive data and limiting its exposure through the plugin, for example by restricting access to certain content or using additional authentication layers. 8. Educate site administrators and users about the risks of privilege escalation and the importance of strong authentication and access control policies.