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CVE-2026-112777 Details

ANALYZED

This CVE record has been analyzed and enriched by NVDAPI.com as an independent party.

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.

Metrics

CVSS 3.x Severity and Vector Strings:

VolerionCVSS-B:7.2 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CNA: [email protected]CVSS-B:7.2 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/craftcms/cms/security/advisories/GHSA-w643-x88w-6wcm	[email protected]	AdvisoryTechnical AnalysisVendor
https://www.vulncheck.com/advisories/craft-cms-before-4.18.8-and-5.11.0-twig-create-blocklist-bypass-leading-to-rce	[email protected]	AdvisoryBroken Link

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-184	Incomplete List of Disallowed Inputs	[email protected]

Affected Products

Product	Versions
Craft CMS	>= 4.0.0, < 4.18.8 (semver) >= 5.0.0, < 5.11.0 (semver)
CPE cpe:2.3:a:craftcms:craft_cms:::::::: Remediation Upgrade: 4.18.8moderate effort Upgrade: 5.11.0moderate effort

Change History

2 change records found show changes

Date	Action	Recorded By
Oct 20, 2026	CVE Modified	CISA-ADP
Oct 19, 2026	New CVE Received	[email protected]