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CVE-2026-28783— Craft has a Twig Function Blocklist Bypass

EPSS 0.03% · P10
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I. Basic Information for CVE-2026-28783

Vulnerability Information
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Vulnerability Title
Craft has a Twig Function Blocklist Bypass
Source: NVD (National Vulnerability Database)
Vulnerability Description
Craft is a content management system (CMS). Prior to 5.9.0-beta.1 and 4.17.0-beta.1, Craft CMS implements a blocklist to prevent potentially dangerous PHP functions from being called via Twig non-Closure arrow functions. In order to be able to successfully execute this attack, you need to either have allowAdminChanges enabled on production, or a compromised admin account, or an account with access to the System Messages utility. Several PHP functions are not included in the blocklist, which could allow malicious actors with the required permissions to execute various types of payloads, including RCEs, arbitrary file reads, SSRFs, and SSTIs. This vulnerability is fixed in 5.9.0-beta.1 and 4.17.0-beta.1.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
对生成代码的控制不恰当(代码注入)
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 5.9.0-beta.1之前版本和4.17.0-beta.1之前版本存在安全漏洞，该漏洞源于阻止列表不完整，可能导致具有特定权限的攻击者执行恶意有效载荷。
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-2026-28783

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III. Intelligence Information for CVE-2026-28783

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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-2026-28781Craft Affected by Entries Authorship Spoofing via Mass Assignment
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-2026-28784Craft is affected by potential authenticated Remote Code Execution via Twig SSTI

IV. Related Vulnerabilities

Same product: cms
Same vendor: craftcms
Same weakness: CWE-94

V. Comments for CVE-2026-28783

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