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CVE-2026-72778— Craft CMS 5.0.0-RC1 before 5.10.6 Authenticated RCE via condition.config

Quick assessment

Affected
craftcms cms
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Craft CMS是Craft CMS公司的一套内容管理系统(CMS)。 Craft CMS 4.0.0-RC1版本至4.18.2之前版本和5.0.0-RC1版本至5.10.6之前版本存在输入验证错误漏洞，该漏洞源于控制面板元素搜索条件处理中对外部请求控制的条件数组清理不充分，Yii特殊配置键在JSON解码后未被重新清理，导致经过身份验证的攻击者可能以PHP/web用户身份执行操作系统命令。

CVSS 8.8 · High EPSS 0.80% · P55

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 4

VendorProduct Version RangeStatus
craftcms cms 5.0.0-RC1< 5.10.6 affected
5.10.6 unaffected
4.0.0-RC1< 4.18.2 affected
4.18.2 unaffected
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I. Basic Information for CVE-2026-72778

Vulnerability Information
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Vulnerability Title
Craft CMS 5.0.0-RC1 before 5.10.6 Authenticated RCE via condition.config
Source: CVE Program / CVE List V5
Vulnerability Description
Craft CMS versions from 4.0.0-RC1 before 4.18.2 and from 5.0.0-RC1 before 5.10.6 contain an authenticated remote code execution vulnerability in the control panel element-search condition handling. Craft cleanses the outer request-controlled condition array via Component::cleanseConfig(), but Conditions::createCondition() later decodes and merges the JSON string in condition.config without re-running cleanseConfig() on the decoded configuration. Because condition.config is a JSON string during the first cleanse, Yii special config keys such as 'as ...' and 'on ...' can be hidden inside it and, after JSON decoding, are interpreted by Yii as behavior/event configuration during FieldLayout object creation. An attacker with an authenticated control panel session (and a valid CSRF token) can exploit this to execute operating system commands as the PHP/web user.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-915
Source: CVE Program / CVE List V5
Vulnerability Title
Craft CMS 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Craft CMS是Craft CMS公司的一套内容管理系统(CMS)。 Craft CMS 4.0.0-RC1版本至4.18.2之前版本和5.0.0-RC1版本至5.10.6之前版本存在输入验证错误漏洞，该漏洞源于控制面板元素搜索条件处理中对外部请求控制的条件数组清理不充分，Yii特殊配置键在JSON解码后未被重新清理，导致经过身份验证的攻击者可能以PHP/web用户身份执行操作系统命令。
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

Vendor Product Affected Versions CPE Subscribe
craftcms cms 5.0.0-RC1 ~ 5.10.6 -
craftcms cms 4.0.0-RC1 ~ 4.18.2 -

II. Public POCs for CVE-2026-72778

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 11110 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
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Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2026-72778

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Vendor Advisories for CVE-2026-72778 (2)

Same Patch Batch · craftcms · 2026-08-11 · 8 CVEs total

CVE-2026-72781 8.8 HIGH Craft CMS 5.0.0-RC1 before 5.10.7 Remote Code Execution via Twig Sandbox Escape
CVE-2026-72780 6.5 MEDIUM Craft CMS before 5.10.5 WebAuthn Assertion Replay via login-with-passkey
CVE-2026-72782 6.5 MEDIUM Craft CMS 5.0.0-RC1 before 5.10.6 Environment Variable Leak
CVE-2026-72783 6.2 MEDIUM Craft CMS 5.0.0-RC1 before 5.10.6 Path Traversal via ensurePathIsContained
CVE-2026-72784 5.4 MEDIUM Craft CMS 5.0.0-RC1 before 5.10.6 SSRF via GraphQL asset mutation
CVE-2026-72779 4.5 MEDIUM Craft CMS 5.0.0-RC1 before 5.10.6 Arbitrary File Read via SplFileObject
CVE-2026-72785 4.3 MEDIUM Craft CMS before 5.10.6 Authorization Bypass via structures/move-element

IV. Related Vulnerabilities

Same product: cms
Same vendor: craftcms
Same weakness: CWE-915

V. Comments for CVE-2026-72778

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