CVE-2025-49974
📋 TL;DR
This CVE describes a missing authorization vulnerability in the UpStream WordPress plugin that allows attackers to bypass access controls and perform unauthorized actions. It affects all WordPress sites using UpStream plugin versions up to 2.1.0. The vulnerability enables privilege escalation and unauthorized data access.
💻 Affected Systems
- UpStream: a Project Management Plugin for WordPress
⚠️ 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
Attackers could access, modify, or delete sensitive project management data, escalate privileges to administrator level, and compromise the entire WordPress site.
Likely Case
Unauthorized users accessing project data they shouldn't see, modifying project details, or performing actions reserved for higher-privileged users.
If Mitigated
With proper access controls and authentication checks, impact would be limited to authorized users only performing permitted actions.
🎯 Exploit Status
Exploitation requires some level of access to WordPress, but the vulnerability allows bypassing authorization checks once authenticated.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after 2.1.0
Restart Required: No
Instructions:
1. Log into WordPress admin panel
2. Navigate to Plugins → Installed Plugins
3. Find UpStream plugin
4. Click 'Update Now' if available
5. If no update available, download latest version from WordPress.org
6. Deactivate old version, upload new version, activate
🔧 Temporary Workarounds
Temporary Plugin Deactivation
allDisable the UpStream plugin until patched
wp plugin deactivate upstream
Access Restriction via .htaccess
linuxRestrict access to plugin directories
Order Deny,Allow
Deny from all
🧯 If You Can't Patch
- Implement strict role-based access controls in WordPress
- Monitor plugin directories for unauthorized access attempts
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → UpStream version numberCheck Version:
wp plugin get upstream --field=versionVerify Fix Applied:
Verify plugin version is greater than 2.1.0 and test authorization controls📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to UpStream endpoints
- Users accessing project data outside their permissions
Network Indicators:
- HTTP requests to /wp-content/plugins/upstream/ with unexpected user roles
SIEM Query:
source="wordpress.log" AND "upstream" AND ("unauthorized" OR "permission denied")