Craft Cms
CVE-2026-28784
HIGH
GHSA-qc86-q28f-ggww
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
3DescriptionNVD
Craft is a content management system (CMS). Prior to 5.8.22 and 4.16.18, it is possible to craft a malicious payload using the Twig map filter in text fields that accept Twig input under Settings in the Craft control panel or using the System Messages utility, which could lead to a RCE. For this to work, you must have administrator access to the Craft Control Panel, and allowAdminChanges must be enabled for this to work, which is against our recommendations for any non-dev environment. Alternatively, you can have a non-administrator account with allowAdminChanges disabled, but you have access to the System Messages utility. Users should update to the patched versions (5.8.22 and 4.16.18) to mitigate the issue.
AnalysisAI
Remote code execution in Craft CMS versions before 5.8.22 and 4.16.18 can be achieved by authenticated administrators or users with System Messages access by injecting malicious Twig payloads through the map filter in configurable text fields. An attacker with admin-level privileges and allowAdminChanges enabled, or non-admin access to System Messages utilities, can execute arbitrary code on the affected server. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Administrator access to Craft Control Panel required. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | CVSS 7.2 (HIGH). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker (requires authentication) could exploit this vulnerability to compromise the affected system. |
| Remediation | A vendor patch is available — apply it immediately. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Identify all Craft CMS instances and their versions; restrict administrative access to Settings and System Messages utilities to trusted personnel only. …
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External POC / Exploit Code
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