CVE-2025-5257
📋 TL;DR
This vulnerability allows unauthenticated users to access unpublished page previews in Mautic via predictable URLs. This could expose draft content or sensitive information that wasn't intended for public release. All Mautic instances with the vulnerable version are affected.
💻 Affected Systems
- Mautic
⚠️ 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
Sensitive draft content (financial data, personal information, strategic plans) becomes publicly accessible and indexed by search engines, leading to data breach and reputational damage.
Likely Case
Draft marketing content, unpublished announcements, or internal communications are exposed to unauthorized viewers, potentially causing embarrassment or minor information leaks.
If Mitigated
With proper authorization checks, only authenticated users with appropriate permissions can access unpublished content previews.
🎯 Exploit Status
Exploitation requires no authentication and uses predictable URL patterns
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Patched version specified in GitHub advisory
Vendor Advisory: https://github.com/mautic/mautic/security/advisories/GHSA-cqx4-9vqf-q3m8
Restart Required: No
Instructions:
1. Check current Mautic version. 2. Upgrade to the patched version. 3. Verify authorization checks are working on preview URLs.
🔧 Temporary Workarounds
Disable page preview functionality
allTemporarily disable the page preview feature until patching is possible
Implement web application firewall rules
allBlock access to /page/preview/* paths for unauthenticated users
🧯 If You Can't Patch
- Implement strict access controls to block /page/preview/* paths at network perimeter
- Monitor web server logs for unauthorized access attempts to preview URLs
🔍 How to Verify
Check if Vulnerable:
Attempt to access /page/preview/1 or similar predictable URLs without authenticationCheck Version:
Check Mautic admin panel or version fileVerify Fix Applied:
Verify that unauthenticated access to /page/preview/* URLs returns permission denied or redirects to login📡 Detection & Monitoring
Log Indicators:
- HTTP 200 responses to /page/preview/* from unauthenticated IPs
- GET requests to preview URLs without authentication headers
Network Indicators:
- Unusual traffic patterns to preview URLs
- Search engine crawlers accessing preview pages
SIEM Query:
source="web_server" AND (url_path="/page/preview/*" OR url_path LIKE "/page/preview/%") AND http_status=200 AND NOT (user_agent="Mautic" OR authenticated_user EXISTS)