Craft Cms
CVE-2026-28784
HIGH
GHSA-qc86-q28f-ggww
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessAuthenticate as administrator
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ExploitAccess Settings or System Messages
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ExecutionInject malicious Twig map filter payload
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ImpactExecute arbitrary code via Twig template rendering
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A06:2021 - Vulnerable and Outdated Components
ASVS 5.0
V1 - Encoding and Sanitization Template injection prevention
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| Exploitation Conditions | Administrator access to Craft Control Panel required. allowAdminChanges configuration setting must be enabled. Craft versions prior to 5.8.22 or 4.16.18. Text fields accepting Twig input in Settings or System Messages utility. |
| Impact | CVSS 7.2 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: High. User interaction: None. Exploitation requires authentication. |
| Exploit ScenarioDerived | An attacker (requires authentication) could exploit this vulnerability to compromise the affected system. |
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Alert meAnalysisAIv1 – Mar 12, 2026
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. A patch is available and users should update immediately to mitigate this risk.
Earlier versions of this analysis (1)
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. [CVSS 7.2 HIGH]
RemediationAI
A vendor patch is available — apply it immediately. Restrict network access to the affected service where possible.
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in composer
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
Affects Craft Cms. 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. Alternati
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
Lifecycle Timeline
2DescriptionGitHub Advisory
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.
Executive ViewAI
A high-severity remote code execution vulnerability exists in Craft CMS versions prior to 5.8.22 and 4.16.18, exploitable through malicious Twig payloads in administrative settings. Organizations running affected versions face direct risk of system compromise and data breach if an authenticated administrator or attacker with control panel access executes the exploit.
Apply vendor patch. If immediate patching is not possible: restrict administrative control panel access by IP/VPN, disable Twig processing in user-editable text fields if functionality permits, implement WAF rules to block suspicious Twig filter syntax in POST requests to /admin endpoints, and enable detailed logging of control panel settings changes for forensic review.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.
Affected Products (CPE)GitHub Advisory
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