CVE-2026-28697

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Source
https://cve.org/CVERecord?id=CVE-2026-28697
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-28697.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-28697
Aliases
Published
2026-03-04T16:26:37.476Z
Modified
2026-04-10T05:41:24.216986Z
Severity
  • 9.4 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H CVSS Calculator
Summary
Craft Affected by Authenticated RCE via "craft.app.fs.write()" in Twig Templates
Details

Craft is a content management system (CMS). Prior to 4.17.0-beta.1 and 5.9.0-beta.1, an authenticated administrator can achieve Remote Code Execution (RCE) by injecting a Server-Side Template Injection (SSTI) payload into Twig template fields (e.g., Email Templates). By calling the craft.app.fs.write() method, an attacker can write a malicious PHP script to a web-accessible directory and subsequently access it via the browser to execute arbitrary system commands. This vulnerability is fixed in 4.17.0-beta.1 and 5.9.0-beta.1.

Database specific 
{
    "cwe_ids": [
        "CWE-1336"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28697.json",
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/craftcms/cms

Affected ranges

Type
GIT
Repo
https://github.com/craftcms/cms
Events
Introduced
04755d93f86d07cc183db47db8a0eee106892e30
Fixed
0ad14c3c7e590461b52aeb44859659e2e231e04d
Database specific 
{
    "versions": [
        {
            "introduced": "5.0.0-RC1"
        },
        {
            "fixed": "5.9.0-beta.1"
        }
    ]
}
Type
GIT
Repo
https://github.com/craftcms/cms
Events
Introduced
daac7c1da2f701f2e9ddee1da1457ce61660b581
Fixed
42cef196d68dd8d48ceaab89b2c9e2edd2cecbe8
Database specific 
{
    "versions": [
        {
            "introduced": "4.0.0-RC1"
        },
        {
            "fixed": "4.17.0-beta.1"
        }
    ]
}

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-28697.json"