CVE-2026-28781

MEDIUM

6.5

Description

Craft is a content management system (CMS). Prior to 4.17.0-beta.1 and 5.9.0-beta.1, the entry creation process allows for Mass Assignment of the authorId attribute. A user with "Create Entries" permission can inject the authorIds[] (or authorId) parameter into the POST request, which the backend processes without verifying if the current user is authorized to assign authorship to others. Normally, this field is not present in the request for users without the necessary permissions. By manually adding this parameter, an attacker can attribute the new entry to any user, including Admins. This effectively "spoofs" the authorship. This vulnerability is fixed in 4.17.0-beta.1 and 5.9.0-beta.1.

Details CVE

Score CVSS v3.16.5

SeveriteMEDIUM

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisLOW

Interaction utilisateurNONE

Publie3/4/2026

Derniere modification3/5/2026

Sourcenvd

Observations honeypot0

Produits affectes

craftcms:craft_cms

Faiblesses (CWE)

CWE-639CWE-915

References

https://github.com/craftcms/cms/commit/830b403870cd784b47ae42a3f5a16e7ac2d7f5a8(security-advisories@github.com)

https://github.com/craftcms/cms/commit/c6dcbdffaf6ab3ffe77d317336684d83699f4542(security-advisories@github.com)

https://github.com/craftcms/cms/security/advisories/GHSA-2xfc-g69j-x2mp(security-advisories@github.com)

Correlations IOC

Aucune correlation enregistree

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