CVE-2026-16639

{"id": "CVE-2026-16639", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-16639", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-08-26T15:22:48.162413Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"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"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "affected": [{"source": "mlhess@drupal.org", "affectedData": [{"repo": "https://git.drupalcode.org/project/i18n_sso", "vendor": "Drupal", "product": "Internationalization Single Sign-On", "versions": [{"status": "affected", "version": "0.0.0", "lessThan": "1.8.0", "versionType": "semver"}], "collectionURL": "https://www.drupal.org/project/i18n_sso"}]}], "published": "2026-08-25T23:16:56.673", "references": [{"url": "https://www.drupal.org/sa-contrib-2026-081", "source": "mlhess@drupal.org"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Secondary", "source": "mlhess@drupal.org", "description": [{"lang": "en", "value": "CWE-288"}]}], "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."}], "lastModified": "2026-08-28T15:29:44.967", "sourceIdentifier": "mlhess@drupal.org"}