CVE-2026-112777: Incomplete List of Disallowed Inputs in craftcms cms
Description
Craft CMS 4.x before 4.18.8 and 5.x before 5.11.0 contains a blocklist bypass in the Twig create() function because its class-name checks are case-sensitive while PHP class resolution is not. Attackers with template-execution rights, such as Control Panel administrators, can instantiate SplFileObject via a lowercase class name to read .env secrets or write a PHP file into the webroot for remote code execution.
CVSS v4.0
Score 8.7high
Affected software
craftcms
cms
craftcms
cms
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-10-19T18:10:49.940Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ad670ec2cdf04f656851758
Added to database: 10/19/2026, 19:35:08 UTC
Last updated: 10/19/2026, 19:35:08 UTC
Views: 1
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