CVE-2025-30960
📋 TL;DR
This CVE describes a Missing Authorization vulnerability in the FS Poster WordPress plugin that allows unauthorized users to perform actions intended only for authenticated administrators. The vulnerability affects all WordPress sites running FS Poster versions up to 6.5.8, potentially enabling attackers to modify plugin settings or post content without proper authentication.
💻 Affected Systems
- FS Poster WordPress Plugin
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
An attacker could gain administrative control over the FS Poster functionality, potentially posting unauthorized content to connected social media accounts, modifying plugin configurations, or accessing sensitive posting credentials.
Likely Case
Unauthorized users could post content to connected social media platforms using the site's credentials, potentially damaging the organization's reputation or spreading malicious content.
If Mitigated
With proper network segmentation and access controls, the impact would be limited to the WordPress instance itself without lateral movement to other systems.
🎯 Exploit Status
The vulnerability is publicly documented with proof-of-concept available, making exploitation straightforward for attackers.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 6.5.9 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find FS Poster and click 'Update Now'. 4. Verify update to version 6.5.9 or higher.
🔧 Temporary Workarounds
Disable FS Poster Plugin
allTemporarily deactivate the vulnerable plugin until patching is possible
wp plugin deactivate fs-poster
Restrict Access via Web Application Firewall
allBlock unauthorized access to FS Poster endpoints
🧯 If You Can't Patch
- Implement strict network access controls to limit who can access the WordPress admin interface
- Monitor for unusual posting activity or configuration changes in FS Poster logs
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for FS Poster version 6.5.8 or earlierCheck Version:
wp plugin get fs-poster --field=versionVerify Fix Applied:
Verify FS Poster version is 6.5.9 or higher in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- Unauthorized POST requests to /wp-admin/admin-ajax.php with fs_poster actions
- Unexpected social media posts from the site's accounts
Network Indicators:
- Unusual outbound traffic to social media APIs from the WordPress server
SIEM Query:
source="wordpress" AND (uri_path="/wp-admin/admin-ajax.php" AND post_data CONTAINS "fs_poster") AND user_agent NOT IN ["admin_user_agents"]