CVE-2025-27008 Overview
CVE-2025-27008 is a Missing Authorization vulnerability (CWE-862) affecting the Unlimited Timeline WordPress plugin. This Broken Access Control flaw allows unauthenticated attackers to access functionality that should be properly constrained by Access Control Lists (ACLs), potentially exposing sensitive information without proper authorization checks.
Critical Impact
Unauthenticated attackers can bypass access controls to retrieve sensitive data from WordPress sites running the vulnerable Unlimited Timeline plugin, leading to significant confidentiality breaches.
Affected Products
- Unlimited Timeline WordPress Plugin (version 1.6.1 and earlier)
- WordPress installations using the Unlimited Timeline plugin
Discovery Timeline
- 2025-04-15 - CVE-2025-27008 published to NVD
- 2026-04-15 - Last updated in NVD database
Technical Details for CVE-2025-27008
Vulnerability Analysis
This vulnerability stems from missing authorization checks within the Unlimited Timeline WordPress plugin. The plugin fails to properly verify user permissions before allowing access to certain functionality, enabling unauthorized users to bypass intended access restrictions. The vulnerability is remotely exploitable without requiring authentication or user interaction, making it particularly dangerous for publicly accessible WordPress sites.
The flaw allows attackers to access functionality that should be restricted by ACLs, potentially exposing timeline data, configuration settings, or other sensitive information managed by the plugin. Since WordPress plugins often handle user-generated content and site configuration data, this type of access control bypass can have significant implications for site security and data privacy.
Root Cause
The root cause is a Missing Authorization vulnerability (CWE-862) where the plugin developers failed to implement proper permission checks before executing privileged operations. WordPress plugins should leverage the platform's built-in capability system to verify user permissions, but this plugin exposes endpoints or functions without adequate authorization validation.
Attack Vector
The attack can be executed remotely over the network without any authentication. An attacker can directly access the vulnerable functionality by crafting requests to the affected plugin endpoints. Since no user interaction or special privileges are required, the attack surface is broad and easily exploitable.
The vulnerability allows attackers to bypass access controls that should restrict functionality to authorized users only. This could be exploited through direct HTTP requests to plugin endpoints that lack proper capability checks, allowing unauthorized data retrieval or functionality access.
Detection Methods for CVE-2025-27008
Indicators of Compromise
- Unusual or unexpected HTTP requests to Unlimited Timeline plugin endpoints from unauthenticated sources
- Access logs showing repeated requests to plugin-specific URLs without corresponding authentication events
- Unexpected data access patterns or information disclosure in server logs
- Anomalous API calls to WordPress REST endpoints associated with the Unlimited Timeline plugin
Detection Strategies
- Monitor web server access logs for requests targeting /wp-content/plugins/unlimited-timeline/ paths
- Implement Web Application Firewall (WAF) rules to detect and block suspicious requests to the plugin
- Review WordPress audit logs for unauthorized access attempts to timeline functionality
- Deploy endpoint detection tools to identify exploitation attempts targeting WordPress installations
Monitoring Recommendations
- Enable comprehensive logging for all WordPress plugin activity
- Configure alerts for unusual traffic patterns to plugin endpoints
- Implement rate limiting on plugin-specific API endpoints
- Monitor for reconnaissance activity targeting WordPress plugin enumeration
How to Mitigate CVE-2025-27008
Immediate Actions Required
- Update the Unlimited Timeline plugin to the latest patched version immediately
- If no patch is available, consider temporarily deactivating the plugin until a fix is released
- Review access logs for any signs of exploitation
- Implement WAF rules to restrict access to vulnerable plugin endpoints
- Audit any sensitive data that may have been exposed through the plugin
Patch Information
Security researchers at Patchstack have documented this vulnerability. Site administrators should check the Patchstack WordPress Vulnerability Report for the latest patch information and remediation guidance. Update to a version newer than 1.6.1 when available.
Workarounds
- Temporarily disable the Unlimited Timeline plugin if a patch is not immediately available
- Implement IP-based access restrictions to limit who can access plugin functionality
- Use a WAF to block unauthenticated requests to the plugin's endpoints
- Consider using WordPress security plugins to add an additional layer of access control
# WordPress CLI command to deactivate the vulnerable plugin
wp plugin deactivate unlimited-timeline
# Alternative: Rename the plugin directory to disable it
mv /var/www/html/wp-content/plugins/unlimited-timeline /var/www/html/wp-content/plugins/unlimited-timeline.disabled
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
