Authenticated Remote Code Execution in Craft CMS by Craft
CVE-2026-72778

8.7HIGH

Key Information:

Vendor

Craftcms

Status
Cms
Vendor
CVE Published:
11 August 2026

What is CVE-2026-72778?

Craft CMS versions from 4.0.0-RC1 before 4.18.2 and from 5.0.0-RC1 before 5.10.6 are susceptible to an authenticated remote code execution vulnerability. This occurs due to improper handling of condition configurations in the control panel's element-search functionality. While the outer request-controlled condition array undergoes cleansing, the subsequent decoding of the JSON string fails to reapply this sanitation, allowing harmful Yii configuration keys to be interpreted during object creation. An attacker with a valid control panel session and CSRF token can potentially execute arbitrary operating system commands with the privileges of the web server user.

Affected Version(s)

cms 5.0.0-RC1 < 5.10.6

cms 4.0.0-RC1 < 4.18.2

cms 5.10.6

References

https://github.com/craftcms/cms/security/advisories/GHSA-...
vendor-advisory
https://www.vulncheck.com/advisories/craft-cms-rc1-before...
third-party-advisory

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

saladin0x1
.