{"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"}}]}}