Vulnerability-Lookup

CVE-2026-16647 (GCVE-0-2026-16647)

Vulnerability from cvelistv5 – Published: 2026-09-02 12:55 – Updated: 2026-09-04 19:54

Title

Disable Login Page - Moderately critical - Access bypass - SA-CONTRIB-2026-111

Summary

Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal Disable Login Page allows Functionality Bypass. This issue affects Disable Login Page versions: from 0.0.0 to 1.1.4.

Severity

4.1 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-02 13:42 UTC

CWE

CWE-288 - Authentication Bypass Using an Alternate Path or Channel

Assigner

drupal mitre root

References

1 reference

URL	Tags
https://www.drupal.org/sa-contrib-2026-111

Impacted products

1 product

Vendor	Product	Version	CPE status
Drupal	Disable Login Page	Affected: 0.0.0 , < 1.1.4 (semver)	guessed

Date Public

2026-08-26 17:39

Credits

Brian Osborne (bkosborne) Jason Partyka (partyka) Brian Osborne (bkosborne) Jason Partyka (partyka) Greg Knaddison (greggles) Juraj Nemec (poker10) Pierre Rudloff (prudloff) Jess (xjm)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 4.1,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "LOW",
              "integrityImpact": "NONE",
              "privilegesRequired": "HIGH",
              "scope": "CHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-16647",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-02T13:42:56.367767Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-04T19:54:13.060Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "collectionURL": "https://www.drupal.org/project/disable_login",
          "product": "Disable Login Page",
          "repo": "https://git.drupalcode.org/project/disable_login",
          "vendor": "Drupal",
          "versions": [
            {
              "lessThan": "1.1.4",
              "status": "affected",
              "version": "0.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Brian Osborne (bkosborne)"
        },
        {
          "lang": "en",
          "type": "finder",
          "value": "Jason Partyka (partyka)"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Brian Osborne (bkosborne)"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Jason Partyka (partyka)"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "Greg Knaddison (greggles)"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "Juraj Nemec (poker10)"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "Pierre Rudloff (prudloff)"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "Jess  (xjm)"
        }
      ],
      "datePublic": "2026-08-26T17:39:32.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal Disable Login Page allows Functionality Bypass. This issue affects Disable Login Page versions: from 0.0.0 to 1.1.4."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-554",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-554 Functionality Bypass"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-288",
              "description": "CWE-288 Authentication Bypass Using an Alternate Path or Channel",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-02T12:55:30.885Z",
        "orgId": "2c85b837-eb8b-40ed-9d74-228c62987387",
        "shortName": "drupal"
      },
      "references": [
        {
          "url": "https://www.drupal.org/sa-contrib-2026-111"
        }
      ],
      "title": "Disable Login Page - Moderately critical - Access bypass - SA-CONTRIB-2026-111"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "2c85b837-eb8b-40ed-9d74-228c62987387",
    "assignerShortName": "drupal",
    "cveId": "CVE-2026-16647",
    "datePublished": "2026-09-02T12:55:30.885Z",
    "dateReserved": "2026-07-22T17:06:48.363Z",
    "dateUpdated": "2026-09-04T19:54:13.060Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-16647",
      "date": "2026-09-07",
      "epss": "0.00283",
      "percentile": "0.20539"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-16647\",\"sourceIdentifier\":\"mlhess@drupal.org\",\"published\":\"2026-09-02T13:17:07.243\",\"lastModified\":\"2026-09-04T20:17:22.823\",\"vulnStatus\":\"Undergoing Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal Disable Login Page allows Functionality Bypass. This issue affects Disable Login Page versions: from 0.0.0 to 1.1.4.\"}],\"affected\":[{\"source\":\"mlhess@drupal.org\",\"affectedData\":[{\"vendor\":\"Drupal\",\"product\":\"Disable Login Page\",\"collectionURL\":\"https://www.drupal.org/project/disable_login\",\"repo\":\"https://git.drupalcode.org/project/disable_login\",\"versions\":[{\"version\":\"0.0.0\",\"lessThan\":\"1.1.4\",\"versionType\":\"semver\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N\",\"baseScore\":4.1,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":2.3,\"impactScore\":1.4}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-09-02T13:42:56.367767Z\",\"id\":\"CVE-2026-16647\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"yes\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"mlhess@drupal.org\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-288\"}]}],\"references\":[{\"url\":\"https://www.drupal.org/sa-contrib-2026-111\",\"source\":\"mlhess@drupal.org\"}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"CHANGED\", \"version\": \"3.1\", \"baseScore\": 4.1, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"HIGH\", \"confidentialityImpact\": \"LOW\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-16647\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-09-02T13:42:56.367767Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-09-02T13:42:33.821Z\"}}], \"cna\": {\"title\": \"Disable Login Page - Moderately critical - Access bypass - SA-CONTRIB-2026-111\", \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"Brian Osborne (bkosborne)\"}, {\"lang\": \"en\", \"type\": \"finder\", \"value\": \"Jason Partyka (partyka)\"}, {\"lang\": \"en\", \"type\": \"remediation developer\", \"value\": \"Brian Osborne (bkosborne)\"}, {\"lang\": \"en\", \"type\": \"remediation developer\", \"value\": \"Jason Partyka (partyka)\"}, {\"lang\": \"en\", \"type\": \"coordinator\", \"value\": \"Greg Knaddison (greggles)\"}, {\"lang\": \"en\", \"type\": \"coordinator\", \"value\": \"Juraj Nemec (poker10)\"}, {\"lang\": \"en\", \"type\": \"coordinator\", \"value\": \"Pierre Rudloff (prudloff)\"}, {\"lang\": \"en\", \"type\": \"coordinator\", \"value\": \"Jess  (xjm)\"}], \"impacts\": [{\"capecId\": \"CAPEC-554\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-554 Functionality Bypass\"}]}], \"affected\": [{\"repo\": \"https://git.drupalcode.org/project/disable_login\", \"vendor\": \"Drupal\", \"product\": \"Disable Login Page\", \"versions\": [{\"status\": \"affected\", \"version\": \"0.0.0\", \"lessThan\": \"1.1.4\", \"versionType\": \"semver\"}], \"collectionURL\": \"https://www.drupal.org/project/disable_login\"}], \"datePublic\": \"2026-08-26T17:39:32.000Z\", \"references\": [{\"url\": \"https://www.drupal.org/sa-contrib-2026-111\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal Disable Login Page allows Functionality Bypass. This issue affects Disable Login Page versions: from 0.0.0 to 1.1.4.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-288\", \"description\": \"CWE-288 Authentication Bypass Using an Alternate Path or Channel\"}]}], \"providerMetadata\": {\"orgId\": \"2c85b837-eb8b-40ed-9d74-228c62987387\", \"shortName\": \"drupal\", \"dateUpdated\": \"2026-09-02T12:55:30.885Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-16647\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-09-04T19:54:13.060Z\", \"dateReserved\": \"2026-07-22T17:06:48.363Z\", \"assignerOrgId\": \"2c85b837-eb8b-40ed-9d74-228c62987387\", \"datePublished\": \"2026-09-02T12:55:30.885Z\", \"assignerShortName\": \"drupal\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}

drupal-contrib-2026-111

Vulnerability from drupal

Published

2026-08-26 17:39

Modified

2026-09-02 12:54

Summary

Details

This module enables you to disable access to the /user/login form unless a secret key is provided.

The module does not invalidate the relevant caches when login page access restrictions are enabled. As a result, previously cached login page responses may remain accessible until caches are cleared. An attacker may continue to access the login page despite the restriction having been enabled.

Credits

Brian Osborne (bkosborne) www.drupal.org/u/bkosborne

Jason Partyka (partyka) www.drupal.org/u/partyka

References

URL

Type

https://www.drupal.org/sa-contrib-2026-111

WEB

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "affected_versions": "\u003c1.1.4"
      },
      "package": {
        "ecosystem": "Packagist:https://packages.drupal.org/8",
        "name": "drupal/disable_login"
      },
      "ranges": [
        {
          "database_specific": {
            "constraint": "\u003c1.1.4"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.1.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "severity": []
    }
  ],
  "aliases": [
    "CVE-2026-16647"
  ],
  "credits": [
    {
      "contact": [
        "https://www.drupal.org/u/bkosborne"
      ],
      "name": "Brian Osborne (bkosborne)"
    },
    {
      "contact": [
        "https://www.drupal.org/u/partyka"
      ],
      "name": "Jason Partyka (partyka)"
    }
  ],
  "details": "This module enables you to disable access to the `/user/login` form unless a secret key is provided.\n\nThe module does not invalidate the relevant caches when login page access restrictions are enabled. As a result, previously cached login page responses may remain accessible until caches are cleared. An attacker may continue to access the login page despite the restriction having been enabled.",
  "id": "DRUPAL-CONTRIB-2026-111",
  "modified": "2026-09-02T12:54:37.000Z",
  "published": "2026-08-26T17:39:32.000Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://www.drupal.org/sa-contrib-2026-111"
    }
  ],
  "schema_version": "1.7.0"
}

FKIE_CVE-2026-16647

Vulnerability from fkie_nvd - Published: 2026-09-02 13:17 - Updated: 2026-09-04 20:17

Severity

4.1 (Medium) - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N

Summary

Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal Disable Login Page allows Functionality Bypass. This issue affects Disable Login Page versions: from 0.0.0 to 1.1.4.

References

	URL	Tags
	mlhess@drupal.org	https://www.drupal.org/sa-contrib-2026-111

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://www.drupal.org/project/disable_login",
          "product": "Disable Login Page",
          "repo": "https://git.drupalcode.org/project/disable_login",
          "vendor": "Drupal",
          "versions": [
            {
              "lessThan": "1.1.4",
              "status": "affected",
              "version": "0.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "mlhess@drupal.org"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal Disable Login Page allows Functionality Bypass. This issue affects Disable Login Page versions: from 0.0.0 to 1.1.4."
    }
  ],
  "id": "CVE-2026-16647",
  "lastModified": "2026-09-04T20:17:22.823",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.1,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.3,
        "impactScore": 1.4,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-16647",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-02T13:42:56.367767Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-02T13:17:07.243",
  "references": [
    {
      "source": "mlhess@drupal.org",
      "url": "https://www.drupal.org/sa-contrib-2026-111"
    }
  ],
  "sourceIdentifier": "mlhess@drupal.org",
  "vulnStatus": "Undergoing Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-288"
        }
      ],
      "source": "mlhess@drupal.org",
      "type": "Secondary"
    }
  ]
}

GHSA-HCFP-75MM-JGGH

Vulnerability from github – Published: 2026-09-02 15:34 – Updated: 2026-09-04 21:31

Details

Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal Disable Login Page allows Functionality Bypass. This issue affects Disable Login Page versions: from 0.0.0 to 1.1.4.

Severity

4.1 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-16647"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-288"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-02T13:17:07Z",
    "severity": "MODERATE"
  },
  "details": "Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal Disable Login Page allows Functionality Bypass. This issue affects Disable Login Page versions: from 0.0.0 to 1.1.4.",
  "id": "GHSA-hcfp-75mm-jggh",
  "modified": "2026-09-04T21:31:41Z",
  "published": "2026-09-02T15:34:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-16647"
    },
    {
      "type": "WEB",
      "url": "https://www.drupal.org/sa-contrib-2026-111"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

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.

Detection rules are retrieved from Rulezet.

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.

Action not permitted

CVE-2026-16647 (GCVE-0-2026-16647)

drupal-contrib-2026-111

Vulnerability from drupal

FKIE_CVE-2026-16647

GHSA-HCFP-75MM-JGGH

Tags

Sightings

Nomenclature