CVE-2026-28782 Details
Description
Craft is a content management system (CMS). Prior to 5.9.0-beta.1 and 4.17.0-beta.1, the "Duplicate" entry action does not properly verify if the user has permission to perform this action on the specific target elements. Even with only "View Entries" permission (where the "Duplicate" action is restricted in the UI), a user can bypass this restriction by sending a direct request. Furthermore, this vulnerability allows duplicating other users' entries by specifying their Entry IDs. Since Entry IDs are incremental, an attacker can trivially brute-force these IDs to duplicate and access restricted content across the system. This vulnerability is fixed in 5.9.0-beta.1 and 4.17.0-beta.1.
A vulnerability exists in Craft CMS versions 4.0.0-RC1 prior to 4.17.0-beta.1 and 5.0.0-RC1 prior to 5.9.0-beta.1. The issue arises in the 'Duplicate' entry action, which fails to properly validate whether a user has the necessary permissions to duplicate specific entries. Users with only 'View Entries' permission can bypass the UI restrictions and duplicate entries, including those of other users, by sending direct requests with the target Entry IDs. This exploitation is feasible because Entry IDs are sequential, allowing for easy brute-forcing to access restricted content.
Users can update to Craft CMS versions 5.9.0-beta.1 or 4.17.0-beta.1, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Mar 4, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/craftcms/cms/commit/fb61a91357f5761c852400185ba931f51d82783d | [email protected] | Patch |
| https://github.com/craftcms/cms/security/advisories/GHSA-jxm3-pmm2-9gf6 | [email protected] | ExploitPatchVendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-639 | Authorization Bypass Through User-Controlled Key | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| craftcms craft cms | > 4.0.0, < 4.17.0 > 5.0.0, < 5.9.0 4.0.0 - 4.0.0 rc1 4.0.0 rc2 4.0.0 rc3 5.0.0 - 5.0.0 rc1 |
CPE
Remediation
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Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Mar 5, 2026 | Initial Analysis | [email protected] |
| Mar 4, 2026 | New CVE Received | [email protected] |