CVE-2026-24134
📋 TL;DR
StudioCMS versions before 0.2.0 contain a Broken Object Level Authorization vulnerability that allows users with the 'Visitor' role to access draft content created by Editor, Admin, or Owner users. This affects all StudioCMS deployments using vulnerable versions where multiple user roles exist.
💻 Affected Systems
- StudioCMS
⚠️ 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
Unauthorized disclosure of sensitive draft content including confidential business information, unpublished announcements, or embargoed materials to all site visitors.
Likely Case
Visitors accidentally discovering draft content not intended for public viewing, potentially causing information leaks or reputational damage.
If Mitigated
Limited impact if draft content contains only non-sensitive placeholder text or if visitor access is already restricted.
🎯 Exploit Status
Exploitation requires authenticated Visitor role access; trivial to exploit once authenticated
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 0.2.0
Vendor Advisory: https://github.com/withstudiocms/studiocms/security/advisories/GHSA-8cw6-53m5-4932
Restart Required: Yes
Instructions:
1. Update StudioCMS to version 0.2.0 or later
2. Restart the StudioCMS service
3. Verify authorization checks are properly implemented
🔧 Temporary Workarounds
Disable Visitor Role Access
allTemporarily remove or disable Visitor role accounts until patching
Content Access Restriction
allImplement additional middleware or proxy rules to restrict draft content access
🧯 If You Can't Patch
- Implement strict network segmentation to isolate StudioCMS from untrusted networks
- Deploy a web application firewall (WAF) with authorization bypass detection rules
🔍 How to Verify
Check if Vulnerable:
Check StudioCMS version; if below 0.2.0, test if Visitor role can access draft content endpointsCheck Version:
Check package.json or deployment configuration for StudioCMS versionVerify Fix Applied:
After updating to 0.2.0+, verify Visitor role cannot access draft content via API/content endpoints📡 Detection & Monitoring
Log Indicators:
- Visitor role users accessing draft content endpoints
- Unauthorized access attempts to /api/content/draft/* endpoints
Network Indicators:
- HTTP 200 responses to draft content requests from Visitor role accounts
SIEM Query:
source="studiocms" AND (uri_path="/api/content/draft/*" OR uri_path="/draft/*") AND user_role="Visitor" AND response_code=200