CVE-2026-112777: Craft CMS before 4.18.8 and 5.11.0 Twig create() Blocklist Bypass Leading to RCE
craftcms · cms
Vendor fix available · Affected: craftcms cms · Exploitation: unlikely (under 1%)
Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.
Higher than 49% of scored CVEs
DescriptionCVE.org
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.
Affected products2
From the CVE record. A product or version that is not listed is unknown, not unaffected.
- craftcms · cmsfrom 4.0.0 before 4.18.8
- craftcms · cmsfrom 5.0.0 before 5.11.0
On the Atlas
Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.
- Exploitation
- Unlikely (under 1%). EPSS under 1%, or no score yet.
- CISA KEV
- Not listed
- Public check
- No public nuclei template
- Vendor
- craftcms
- Published
- October 2026
CoverageNo articles yet
No CyberSIXT article names CVE-2026-112777 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.