CVE-2026-28782

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.

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://github.com/craftcms/cms/commit/fb61a91357f5761c852400185ba931f51d82783d	Patch
https://github.com/craftcms/cms/security/advisories/GHSA-jxm3-pmm2-9gf6	Exploit Patch Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:craftcms:craft_cms::::::::
	cpe:2.3:a:craftcms:craft_cms::::::::
	cpe:2.3:a:craftcms:craft_cms:4.0.0:-::::::
	cpe:2.3:a:craftcms:craft_cms:4.0.0:rc1::::::
	cpe:2.3:a:craftcms:craft_cms:4.0.0:rc2::::::
	cpe:2.3:a:craftcms:craft_cms:4.0.0:rc3::::::
	cpe:2.3:a:craftcms:craft_cms:5.0.0:-::::::
	cpe:2.3:a:craftcms:craft_cms:5.0.0:rc1::::::

History

No history.

Information

Published : 2026-03-04 17:16

Updated : 2026-03-05 19:55

NVD link : CVE-2026-28782

Mitre link : CVE-2026-28782

CVE.ORG link : CVE-2026-28782

JSON object : View

Products Affected

craftcms

craft_cms

CWE

CWE-639

Authorization Bypass Through User-Controlled Key

{"id": "CVE-2026-28782", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 2.8}], "cvssMetricV40": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 5.3, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "LOW", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "published": "2026-03-04T17:16:21.533", "references": [{"url": "https://github.com/craftcms/cms/commit/fb61a91357f5761c852400185ba931f51d82783d", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/craftcms/cms/security/advisories/GHSA-jxm3-pmm2-9gf6", "tags": ["Exploit", "Patch", "Vendor Advisory"], "source": "security-advisories@github.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-639"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Craft es un sistema de gesti\u00f3n de contenido (CMS). Antes de 5.9.0-beta.1 y 4.17.0-beta.1, la acci\u00f3n de entrada 'Duplicar' no verifica correctamente si el usuario tiene permiso para realizar esta acci\u00f3n en los elementos objetivo espec\u00edficos. Incluso con solo el permiso de 'Ver Entradas' (donde la acci\u00f3n 'Duplicar' est\u00e1 restringida en la interfaz de usuario), un usuario puede eludir esta restricci\u00f3n enviando una solicitud directa. Adem\u00e1s, esta vulnerabilidad permite duplicar entradas de otros usuarios especificando sus IDs de Entrada. Dado que los IDs de Entrada son incrementales, un atacante puede forzar por fuerza bruta trivialmente estos IDs para duplicar y acceder a contenido restringido en todo el sistema. Esta vulnerabilidad est\u00e1 corregida en 5.9.0-beta.1 y 4.17.0-beta.1."}], "lastModified": "2026-03-05T19:55:33.597", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FD3AD543-D77F-4B2E-AF8D-1C7C724BD26D", "versionEndExcluding": "4.17.0", "versionStartExcluding": "4.0.0"}, {"criteria": "cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "81B9164E-4845-4D81-A841-378CE4E32485", "versionEndExcluding": "5.9.0", "versionStartExcluding": "5.0.0"}, {"criteria": "cpe:2.3:a:craftcms:craft_cms:4.0.0:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "610F6DE9-720F-45B3-81D5-18E7F6B090FD"}, {"criteria": "cpe:2.3:a:craftcms:craft_cms:4.0.0:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "CC2F40FC-7C27-456A-B16D-679410D1D5CF"}, {"criteria": "cpe:2.3:a:craftcms:craft_cms:4.0.0:rc2:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "FBAA8227-04F8-404C-907B-B0162B325F5A"}, {"criteria": "cpe:2.3:a:craftcms:craft_cms:4.0.0:rc3:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "21B28E2C-327A-4CE6-ACAD-97E459712A55"}, {"criteria": "cpe:2.3:a:craftcms:craft_cms:5.0.0:-:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1C7461CF-35AB-48E1-88B6-956DAE1D2AB4"}, {"criteria": "cpe:2.3:a:craftcms:craft_cms:5.0.0:rc1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "8D8E02D1-601A-4E2B-B619-4775BFDB72D0"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}