CVE-2026-78416— Authenticated RCE via `condition.config` JSON cleanse bypass
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 4.0.0-RC1 至 4.18.2 之前版本，以及 5.0.0-RC1 至 5.10.6 之前版本中，控制面板的元素搜索条件处理存在认证远程代码执行漏洞。在条件配置文件（condition.config）的 JSON 清理机制存在绕过漏洞，使得在 JSON 解码后，Yii 的行为/事件配置键被错误解释，从而导致以 PHP/Web 用户权限执行任意命令。
Possible ATT&CK Techniques 2 AI
T1059 · Command and Scripting Interpreter T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-78416
Vulnerability Information
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Vulnerability Title
Authenticated RCE via `condition.config` JSON cleanse bypass
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 control panel element-search condition handling. A JSON cleanse bypass in condition.config allows Yii behavior/event configuration keys to be interpreted after decoding, enabling command execution as the PHP/web user.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-915
Source: CVE Program / CVE List V5
Affected Products
II. Public POCs for CVE-2026-78416
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
Premium
Qwen3.6-35B-A3B
· 10329 chars
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III. Intelligence Information for CVE-2026-78416
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Patches & Fixes for CVE-2026-78416 (1)
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🔗 Release 5.10.6 · craftcms/cms · GitHub release-notes
News Coverage for CVE-2026-78416 (1)
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🔗 Authenticated RCE via `condition.config` JSON cleanse bypass | Hackrate third-party-advisory technical-description mitigation
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V. Comments for CVE-2026-78416
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