Vulnerability-Lookup

(CVE-2026-3532)

Vulnerability from drupal – Published: 2026-03-04 18:02 – Updated: 2026-03-04 18:02 – Source website

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.

The module doesn't sufficiently validate the uniqueness of certain user fields depending on the database engine and its collation.

As a result, a user may be able to register with the same email address as another user.

This may lead to data integrity issues.

Credits

Eric Smith (ericgsmith) www.drupal.org/u/ericgsmith

References

URL

Type

https://www.drupal.org/sa-contrib-2026-027

WEB

JSON

To clipboard

{
  "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-2026-3532"
  ],
  "credits": [
    {
      "contact": [
        "https://www.drupal.org/u/ericgsmith"
      ],
      "name": "Eric Smith (ericgsmith)"
    }
  ],
  "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\nThe module doesn\u0027t sufficiently validate the uniqueness of certain user fields depending on the database engine and its collation.\n\nAs a result, a user may be able to register with the same email address as another user.\n\nThis may lead to data integrity issues.",
  "id": "DRUPAL-CONTRIB-2026-027",
  "modified": "2026-03-04T18:02:59.000Z",
  "published": "2026-03-04T18:02:59.000Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://www.drupal.org/sa-contrib-2026-027"
    }
  ],
  "schema_version": "1.7.0"
}

CVE-2026-3532 (GCVE-0-2026-3532)

Vulnerability from cvelistv5 – Published: 2026-03-26 20:04 – Updated: 2026-03-27 13:53

Title

OpenID Connect / OAuth client - Less critical - Access bypass - SA-CONTRIB-2026-027

Summary

Improper Handling of Case Sensitivity vulnerability in Drupal OpenID Connect / OAuth client allows Privilege Escalation.This issue affects OpenID Connect / OAuth client: from 0.0.0 before 1.5.0.

Severity

4.2 (Medium)


                        
                          CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-03-27 13:53 UTC

CWE

CWE-178 - Improper Handling of Case Sensitivity

Assigner

drupal mitre root

References

1 reference

URL	Tags
https://www.drupal.org/sa-contrib-2026-027

Impacted products

1 product

Vendor	Product	Version
Drupal	OpenID Connect / OAuth client	Affected: 0.0.0 , < 1.5.0 (semver)

Date Public

2026-03-04 18:02

Credits

Eric Smith (ericgsmith) Philip Frilling (pfrilling) Greg Knaddison (greggles) Drew Webber (mcdruid) Juraj Nemec (poker10)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "HIGH",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 4.2,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "LOW",
              "integrityImpact": "LOW",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-3532",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-27T13:53:56.616725Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-27T13:53:59.637Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://www.drupal.org/project/openid_connect",
          "defaultStatus": "unaffected",
          "product": "OpenID Connect / OAuth client",
          "repo": "https://git.drupalcode.org/project/openid_connect",
          "vendor": "Drupal",
          "versions": [
            {
              "lessThan": "1.5.0",
              "status": "affected",
              "version": "0.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Eric Smith (ericgsmith)"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Philip Frilling (pfrilling)"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "Greg Knaddison (greggles)"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "Drew Webber (mcdruid)"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "Juraj Nemec (poker10)"
        }
      ],
      "datePublic": "2026-03-04T18:02:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Improper Handling of Case Sensitivity vulnerability in Drupal OpenID Connect / OAuth client allows Privilege Escalation.\u003cp\u003eThis issue affects OpenID Connect / OAuth client: from 0.0.0 before 1.5.0.\u003c/p\u003e"
            }
          ],
          "value": "Improper Handling of Case Sensitivity vulnerability in Drupal OpenID Connect / OAuth client allows Privilege Escalation.This issue affects OpenID Connect / OAuth client: from 0.0.0 before 1.5.0."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-233",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-233 Privilege Escalation"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-178",
              "description": "CWE-178 Improper Handling of Case Sensitivity",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-03-26T20:04:03.160Z",
        "orgId": "2c85b837-eb8b-40ed-9d74-228c62987387",
        "shortName": "drupal"
      },
      "references": [
        {
          "url": "https://www.drupal.org/sa-contrib-2026-027"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "OpenID Connect / OAuth client - Less critical - Access bypass - SA-CONTRIB-2026-027",
      "x_generator": {
        "engine": "Vulnogram 1.0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "2c85b837-eb8b-40ed-9d74-228c62987387",
    "assignerShortName": "drupal",
    "cveId": "CVE-2026-3532",
    "datePublished": "2026-03-26T20:04:03.160Z",
    "dateReserved": "2026-03-04T16:42:01.310Z",
    "dateUpdated": "2026-03-27T13:53:59.637Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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 MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

(CVE-2026-3532)

CVE-2026-3532 (GCVE-0-2026-3532)

Tags

Sightings

Nomenclature

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