{"id":"CVE-2026-87937","title":"Central Authentication System (CAS) Server - Moderately critical - Open redirect - SA-CONTRIB-2026-135","summary":"URL Redirection to Untrusted Site ('Open Redirect') vulnerability in Drupal Central Authentication System (CAS) Server allows Fake the Source of Data. This issue affects Central Authentication System (CAS) Server versions: from 0.0.0 to …","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","cvssSource":"adp","cwe":["CWE-601"],"vendor":"Drupal","product":"Central Authentication System (CAS) Server","affected":["central_authentication_system_cas_server >= 0.0.0 < 2.0.4","central_authentication_system_cas_server >= 2.1.0 < 2.1.3"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-10-22T17:29:51.776152Z"},"published":"2026-10-22","updated":"2026-10-22","sourceUpdated":"2026-10-22T17:29:54.899Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-87937","references":[{"url":"https://www.drupal.org/sa-contrib-2026-135"}],"tags":["cve.org"],"ingestedAt":"2026-10-22T02:23:25.194Z","epss":0.00284,"epssPercentile":0.2084,"slug":"CVE-2026-87937","body":"## Overview\n\nURL Redirection to Untrusted Site ('Open Redirect') vulnerability in Drupal Central Authentication System (CAS) Server allows Fake the Source of Data. This issue affects Central Authentication System (CAS) Server versions: from 0.0.0 to 2.0.4, from 2.1.0 to 2.1.3.\n\n## Affected\n\n- `central_authentication_system_cas_server >= 0.0.0 < 2.0.4`\n- `central_authentication_system_cas_server >= 2.1.0 < 2.1.3`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[{"seq":227839,"id":"CVE-2026-87937","ts":1792706663103,"field":"cvss","old":null,"new":"6.5"},{"seq":227838,"id":"CVE-2026-87937","ts":1792706663103,"field":"severity","old":"none","new":"medium"}]}