CVE-2026-113660 apostrophecms CVE debrief

Who should care

ApostropheCMS users, administrators, and developers should assess exposure and prioritize verification and remediation. This includes reviewing and updating access controls for low-privilege users, verifying localized document identifier restrictions, and prioritizing remediation for versions < 4.33.0 to mitigate potential unauthorized access to draft content.

Why it matters

ApostropheCMS users should assess exposure and prioritize verification of localized document identifier restrictions due to an authenticated object-level authorization bypass vulnerability in the exist-in-locale API.

• Verification of localized document identifier restrictions
• Potential unauthorized access to draft content
• Reevaluation of access controls for low-privilege users
• Remediation prioritization for versions < 4.33.0

Technical summary

ApostropheCMS's exist-in-locale API allows an authenticated low-privilege user to determine whether restricted documents exist in a specified locale and mode, including draft mode. The endpoint returns localized document identifiers without applying document-level view or edit authorization criteria. This issue is fixed in version 4.33.0, which addresses the object-level authorization bypass vulnerability. Users should review and update access controls for low-privilege users to mitigate potential unauthorized access to draft content.

Defensive priority

Medium-priority verification and remediation recommended for ApostropheCMS users.

Recommended defensive actions

• Verify localized document identifier restrictions in ApostropheCMS
• Assess exposure and prioritize remediation for versions < 4.33.0
• Review and update access controls for low-privilege users
• Perform vulnerability scanning to identify potentially exposed systems
• Implement compensating controls for exposed systems while remediation is scheduled and verified
• Monitor relevant logs for exposed assets that need extra review
• Track exceptions and retest remediated assets to ensure thorough verification

Evidence notes

The CVE record and source item provide details on the authenticated object-level authorization bypass vulnerability in ApostropheCMS's exist-in-locale API. The vulnerability allows an authenticated low-privilege user to determine whether restricted documents exist in a specified locale and mode, including draft mode. Defenders should verify localized document identifier restrictions and assess exposure to prioritize remediation for versions < 4.33.0.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.