CVE-2026-112777
Craft CMS 4.x before 4.18.8 and 5.x before 5.11.0 contains a blocklist bypass in the Twig create()…
- Risk score
- 51/100
- CVSS
- 7.2 v3.1
- Exploit chance (30 days)
- 0.5%
- Published
- 19 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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 c…
- Affected
- See advisory
- Fix
- Upgrade the product to 4.18.8 or 5.11.0 (whichever matches your release line), or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 7.2 high
References
Original 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.
Last activity 19 Oct 2026. Patch Forecast updates every hour.