CVE-2026-54244 in Statamic
Summary
by MITRE • 07/18/2026
Statamic is a Laravel and Git powered content management system (CMS). Prior to 5.74.0 and 6.20.3, the Live Preview endpoint for existing entries and terms in src/Http/Controllers/CP/PreviewController.php only checked view authorization, but it accepts and renders caller-supplied field values. A Control Panel user with view but not edit permission could therefore submit content they were not authorized to author and generate a shareable Live Preview URL rendering it. This issue is fixed in versions 5.74.0 and 6.20.3.
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Analysis
by VulDB Data Team • 07/18/2026
The vulnerability identified in Statamic CMS represents a critical authorization bypass flaw that undermines the system's security model for content management operations. This issue affects versions prior to 5.74.0 and 6.20.3, specifically targeting the Live Preview functionality within the Control Panel. The vulnerability stems from insufficient validation mechanisms in the PreviewController.php file located at src/Http/Controllers/CP/PreviewController.php, where the system performs inadequate access control checks during preview generation operations.
The technical flaw manifests through improper authorization validation during Live Preview endpoint processing, where the system only verifies view permissions but fails to enforce edit restrictions when accepting user-supplied field values. This creates a scenario where authenticated Control Panel users with limited view-only privileges can manipulate content fields through the preview mechanism and generate shareable URLs that render unauthorized modifications. The vulnerability operates at the application layer and represents a classic case of insufficient input validation combined with weak access control enforcement.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it enables malicious or compromised users to bypass content authoring restrictions and potentially publish unauthorized content. Attackers can exploit this flaw by submitting crafted field values through the Live Preview endpoint, which then gets rendered in a shareable URL format. This capability allows for unauthorized content manipulation, potential data integrity violations, and could serve as a vector for further exploitation within the CMS environment. The vulnerability is particularly concerning given that it affects core content management functionality and can be leveraged by users who should not have editing privileges.
This security weakness aligns with CWE-285, which addresses improper authorization in software systems, and demonstrates clear characteristics of the ATT&CK technique T1078.004 - Valid Accounts, where legitimate user credentials are used to perform unauthorized actions within system boundaries. The vulnerability also reflects poor input sanitization practices that enable server-side request forgery or content injection attacks. Organizations using affected Statamic versions should immediately implement mitigations including upgrading to patched versions 5.74.0 and 6.20.3, implementing additional access control monitoring, and reviewing user permission assignments to minimize potential impact. The fix addresses the root cause by enforcing proper authorization checks before accepting and rendering caller-supplied field values in preview operations.
The vulnerability highlights the importance of comprehensive security testing for web applications that implement role-based access controls, particularly in content management systems where different user roles require distinct permission levels for viewing versus editing content. Proper implementation of authorization checks should occur at multiple layers of the application stack to prevent such bypass scenarios. The issue also demonstrates how seemingly benign functionality like Live Preview can become a security vector when proper input validation and access control mechanisms are not properly enforced, emphasizing the need for defense-in-depth approaches in CMS security architectures.