(CVE-2026-3531)
Vulnerability from drupal – Published: 2026-03-04 18:02 – Updated: 2026-03-04 18:02 – Source websiteThis module enables you to use an external OpenID Connect login provider to authenticate and log in users on your site. If a user signs in with a login provider for the first time on the website, a new Drupal user will be created.
A visitor who successfully logs in to their Identity Provider and is denied access to Drupal through custom code or a server error will maintain their session at the Identity Provider, possibly leading to access bypass situations, especially in a shared computing environment.
| URL | Type | |
|---|---|---|
{
"affected": [
{
"database_specific": {
"affected_versions": "\u003c1.5.0"
},
"package": {
"ecosystem": "Packagist:https://packages.drupal.org/8",
"name": "drupal/openid_connect"
},
"ranges": [
{
"database_specific": {
"constraint": "\u003c1.5.0"
},
"events": [
{
"introduced": "0"
},
{
"fixed": "1.5.0"
}
],
"type": "ECOSYSTEM"
}
],
"severity": []
}
],
"aliases": [
"CVE-2026-3531"
],
"credits": [
{
"contact": [
"https://www.drupal.org/u/kimberleycgm"
],
"name": "Kimberley Massey (kimberleycgm)"
}
],
"details": "This module enables you to use an external OpenID Connect login provider to authenticate and log in users on your site. If a user signs in with a login provider for the first time on the website, a new Drupal user will be created.\n\nA visitor who successfully logs in to their Identity Provider and is denied access to Drupal through custom code or a server error will maintain their session at the Identity Provider, possibly leading to access bypass situations, especially in a shared computing environment.",
"id": "DRUPAL-CONTRIB-2026-026",
"modified": "2026-03-04T18:02:14.000Z",
"published": "2026-03-04T18:02:14.000Z",
"references": [
{
"type": "WEB",
"url": "https://www.drupal.org/sa-contrib-2026-026"
}
],
"schema_version": "1.7.0"
}
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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