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CVE-2026-28781— Craft Affected by Entries Authorship Spoofing via Mass Assignment

AI Predicted 5.3 Difficulty: Easy EPSS 0.05% · P16
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I. Basic Information for CVE-2026-28781

Vulnerability Information
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Vulnerability Title
Craft Affected by Entries Authorship Spoofing via Mass Assignment
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: NVD (National Vulnerability Database)
Vulnerability Title
Craft CMS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Craft CMS是Craft CMS开源的一套内容管理系统（CMS）。 Craft CMS 4.17.0-beta.1之前版本和5.9.0-beta.1之前版本存在安全漏洞，该漏洞源于条目创建过程中对authorId属性的大规模赋值缺少验证，可能导致伪造作者身份。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
craftcmscms >= 5.0.0-RC1, < 5.9.0-beta.1 -

II. Public POCs for CVE-2026-28781

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III. Intelligence Information for CVE-2026-28781

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Advisory · 1Patch · 2

Same Patch Batch · craftcms · 2026-03-04 · 8 CVEs total

CVE-2026-28696Craft affected by IDOR via GraphQL @parseRefs
CVE-2026-28695Craft affected by authenticated RCE via Twig SSTI - create() function + Symfony Process ga
CVE-2026-28697Craft Affected by Authenticated RCE via "craft.app.fs.write()" in Twig Templates
CVE-2026-28782Craft has a Permission Bypass and IDOR in Duplicate Entry Action
CVE-2026-29069Craft has an unauthenticated activation email trigger with potential user enumeration
CVE-2026-28783Craft has a Twig Function Blocklist Bypass
CVE-2026-28784Craft is affected by potential authenticated Remote Code Execution via Twig SSTI

IV. Related Vulnerabilities

Same product: cms
Same vendor: craftcms
Same weakness: CWE-639

V. Comments for CVE-2026-28781

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