DRUPAL-CONTRIB-2026-172
The advisory, in context
The Webform module allows site builders to create forms, collect submissions, and configure access to forms and submission data. Form submissions may include uploaded files.
The module does not sufficiently force certain uploaded file types to download when served. Under certain site configurations, a file uploaded through a webform could be rendered inline by a browser, resulting in a cross-site scripting vulnerability.
This vulnerability is mitigated by the fact that a user with permission to create or edit webforms must configure the form to allow the affected file extensions, and a user must specifically open the uploaded file.
Affected packages
Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.
Earlier releases before 6.2.12
Fixed in 6.2.12
From 6.3.0 before 6.3.1
Fixed in 6.3.1
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "6.2.12"
}
],
"type": "ECOSYSTEM",
"database_specific": {
"constraint": "<6.2.12"
}
},
{
"events": [
{
"introduced": "6.3.0"
},
{
"fixed": "6.3.1"
}
],
"type": "ECOSYSTEM",
"database_specific": {
"constraint": ">=6.3.0 <6.3.1"
}
}
],
"versions": []
}