{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-16639",
        "assignerOrgId": "2c85b837-eb8b-40ed-9d74-228c62987387",
        "state": "PUBLISHED",
        "assignerShortName": "drupal",
        "dateReserved": "2026-07-22T17:06:41.738Z",
        "datePublished": "2026-08-25T22:22:12.799Z",
        "dateUpdated": "2026-08-26T15:23:15.811Z"
    },
    "containers": {
        "cna": {
            "title": "Internationalization Single Sign-On - Critical - Access bypass - SA-CONTRIB-2026-081",
            "datePublic": "2026-07-22T17:53:35.000Z",
            "references": [
                {
                    "url": "https://www.drupal.org/sa-contrib-2026-081"
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-288",
                            "description": "CWE-288 Authentication Bypass Using an Alternate Path or Channel",
                            "lang": "en",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "impacts": [
                {
                    "capecId": "CAPEC-115",
                    "descriptions": [
                        {
                            "lang": "en",
                            "value": "CAPEC-115 Authentication Bypass"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "collectionURL": "https://www.drupal.org/project/i18n_sso",
                    "product": "Internationalization Single Sign-On",
                    "vendor": "Drupal",
                    "repo": "https://git.drupalcode.org/project/i18n_sso",
                    "versions": [
                        {
                            "lessThan": "1.8.0",
                            "status": "affected",
                            "version": "0.0.0",
                            "versionType": "semver"
                        }
                    ]
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal Internationalization Single Sign-On allows Authentication Bypass. This issue affects Internationalization Single Sign-On versions: from 0.0.0 to 1.8.0."
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "type": "finder",
                    "value": "Drew Webber (mcdruid)"
                },
                {
                    "lang": "en",
                    "type": "remediation developer",
                    "value": "Florent Torregrosa (grimreaper)"
                },
                {
                    "lang": "en",
                    "type": "remediation developer",
                    "value": "Drew Webber (mcdruid)"
                },
                {
                    "lang": "en",
                    "type": "coordinator",
                    "value": "Bram Driesen (bramdriesen)"
                },
                {
                    "lang": "en",
                    "type": "coordinator",
                    "value": "Greg Knaddison (greggles)"
                },
                {
                    "lang": "en",
                    "type": "coordinator",
                    "value": "Drew Webber (mcdruid)"
                },
                {
                    "lang": "en",
                    "type": "coordinator",
                    "value": "Juraj Nemec (poker10)"
                }
            ],
            "providerMetadata": {
                "orgId": "2c85b837-eb8b-40ed-9d74-228c62987387",
                "shortName": "drupal",
                "dateUpdated": "2026-08-25T22:22:12.799Z"
            }
        },
        "adp": [
            {
                "metrics": [
                    {
                        "cvssV3_1": {
                            "scope": "UNCHANGED",
                            "version": "3.1",
                            "baseScore": 9.8,
                            "attackVector": "NETWORK",
                            "baseSeverity": "CRITICAL",
                            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
                            "integrityImpact": "HIGH",
                            "userInteraction": "NONE",
                            "attackComplexity": "LOW",
                            "availabilityImpact": "HIGH",
                            "privilegesRequired": "NONE",
                            "confidentialityImpact": "HIGH"
                        }
                    },
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-08-26T15:22:48.162413Z",
                                "id": "CVE-2026-16639",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "Technical Impact": "total"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-08-26T15:23:15.811Z"
                }
            }
        ]
    }
}