DRUPAL-CONTRIB-2026-174
The advisory, in context
The Webform module allows site builders to create forms, collect submissions, and configure access to forms and submission data.
Webform did not sufficiently guard user-specific access rules against a malformed saved configuration. Under certain site-specific conditions, an access rule intended to grant submission access only to selected user accounts could also grant access to anonymous users.
This vulnerability is mitigated by the fact that the bypass depends on malformed saved access-rule configuration.
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": []
}