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Craft Cms CVE-2026-28782

MEDIUM
Authorization Bypass Through User-Controlled Key (CWE-639)
2026-03-04 security-advisories@github.com GHSA-jxm3-pmm2-9gf6
Authentication Bypass Craft Cms
4.3
CVSS 3.1
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CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
None

Lifecycle Timeline

4
Analysis Generated
Mar 12, 2026 - 22:05 vuln.today
PoC Detected
Mar 05, 2026 - 19:55 vuln.today
Public exploit code
Patch released
Mar 05, 2026 - 19:55 nvd
Patch available
CVE Published
Mar 04, 2026 - 17:16 nvd
MEDIUM 4.3

DescriptionNVD

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.

AnalysisAI

Craft CMS prior to versions 5.9.0-beta.1 and 4.17.0-beta.1 fails to properly authorize the "Duplicate" entry action, allowing authenticated users to bypass UI restrictions and duplicate entries via direct requests. An attacker with minimal "View Entries" permissions can exploit predictable, incremental Entry IDs to brute-force and duplicate other users' restricted content, gaining unauthorized access to sensitive data. …

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Vulnerability AssessmentAI

Risk Assessment CVSS 4.3 (MEDIUM). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker could exploit this vulnerability to compromise the affected system.
Remediation A vendor patch is available — apply it immediately. … Detailed patch versions, workarounds, and compensating controls in full report.
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Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. …

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CVE-2026-28782 vulnerability details – vuln.today
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