CVE-2026-87937

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{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-87937", "assignerOrgId": "2c85b837-eb8b-40ed-9d74-228c62987387", "state": "PUBLISHED", "assignerShortName": "drupal", "dateReserved": "2026-09-09T16:56:20.052Z", "datePublished": "2026-10-22T01:22:04.473Z", "dateUpdated": "2026-10-22T17:29:54.899Z"}, "containers": {"cna": {"title": "Central Authentication System (CAS) Server - Moderately critical - Open redirect - SA-CONTRIB-2026-135", "datePublic": "2026-09-09T17:15:40.000Z", "references": [{"url": "https://www.drupal.org/sa-contrib-2026-135"}], "problemTypes": [{"descriptions": [{"cweId": "CWE-601", "description": "CWE-601 URL Redirection to Untrusted Site ('Open Redirect')", "lang": "en", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-194", "descriptions": [{"lang": "en", "value": "CAPEC-194 Fake the Source of Data"}]}], "affected": [{"collectionURL": "https://www.drupal.org/project/cas_server", "product": "Central Authentication System (CAS) Server", "vendor": "Drupal", "repo": "https://git.drupalcode.org/project/cas_server", "versions": [{"lessThan": "2.0.4", "status": "affected", "version": "0.0.0", "versionType": "semver"}, {"lessThan": "2.1.3", "status": "affected", "version": "2.1.0", "versionType": "semver"}]}], "descriptions": [{"lang": "en", "value": "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 2.0.4, from 2.1.0 to 2.1.3."}], "credits": [{"lang": "en", "type": "finder", "value": "Kalle Kipin\u00c3\u00a4 (kekkis)"}, {"lang": "en", "type": "remediation developer", "value": "Ted Cooper (elc)"}, {"lang": "en", "type": "coordinator", "value": "Bram Driesen (bramdriesen)"}, {"lang": "en", "type": "coordinator", "value": "Greg Knaddison (greggles)"}, {"lang": "en", "type": "coordinator", "value": "Jess (xjm)"}, {"lang": "en", "type": "coordinator", "value": "Swan Kalata (akalata)"}], "providerMetadata": {"orgId": "2c85b837-eb8b-40ed-9d74-228c62987387", "shortName": "drupal", "dateUpdated": "2026-10-22T01:22:04.473Z"}}, "adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}}, {"other": {"type": "ssvc", "content": {"id": "CVE-2026-87937", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-22T17:29:51.776152Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-22T17:29:47.816Z"}}]}}

{"affected": [{"affectedData": [{"collectionURL": "https://www.drupal.org/project/cas_server", "product": "Central Authentication System (CAS) Server", "repo": "https://git.drupalcode.org/project/cas_server", "vendor": "Drupal", "versions": [{"lessThan": "2.0.4", "status": "affected", "version": "0.0.0", "versionType": "semver"}, {"lessThan": "2.1.3", "status": "affected", "version": "2.1.0", "versionType": "semver"}]}], "source": "mlhess@drupal.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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 2.0.4, from 2.1.0 to 2.1.3."}], "id": "CVE-2026-87937", "lastModified": "2026-10-22T18:17:31.410", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 2.5, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-87937", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-22T17:29:51.776152Z", "version": "2.0.3"}}]}, "published": "2026-10-22T02:17:03.147", "references": [{"source": "mlhess@drupal.org", "url": "https://www.drupal.org/sa-contrib-2026-135"}], "sourceIdentifier": "mlhess@drupal.org", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-601"}], "source": "mlhess@drupal.org", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0.0.0,2.0.4)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[2.1.0,2.1.3)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Central Authentication System (CAS) Server", "source": "cna", "vendor": "Drupal"}, "product": "central_authentication_system_(cas)_server", "vendor": "drupal"}], "created": "2026-10-22T07:00:15.058272+00:00", "updated": "2026-10-23T02:00:16.714960+00:00", "vendors": ["drupal", "drupal$PRODUCT$central_authentication_system_(cas)_server"]}