MJML through 4.18.0 allows mj-include directory traversal to test file existence and (in the type="css" case) read files. NOTE: this issue exists because of an incomplete fix for CVE-2020-12827.
{
"cwe_ids": [
"CWE-36"
],
"github_reviewed": true,
"nvd_published_at": "2025-12-14T22:15:36Z",
"severity": "MODERATE",
"github_reviewed_at": "2025-12-17T18:12:02Z"
}