Authorization bypass through user-controlled key in Craft CMS - CVE-2026-28782
Published: June 16, 2026
Vulnerability identifier: #VU134651
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-28782
CWE-ID: CWE-639
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to bypass authorization and access restricted content.
The vulnerability exists due to improper access control in the Duplicate entry action when handling direct requests with user-controlled Entry IDs. A remote user can send a specially crafted request to bypass authorization and access restricted content.
The issue can be exploited by a user with only "View Entries" permission, and incremental Entry IDs make brute-force enumeration possible.
Affected software
Craft CMS
How to mitigate CVE-2026-28782
Install security update from vendor's website.
Craft CMS - addressed in versions 4.17.0, 5.9.0