CVE-2026-53952

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{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-53952", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-11T15:50:01.281Z", "datePublished": "2026-09-11T19:23:30.889Z", "dateUpdated": "2026-09-14T18:18:01.091Z"}, "containers": {"cna": {"title": "GetSimple CMS & GetSimpleCMS-CE have an Unauthenticated Admin Account Creation via Setup Logic Flaw", "problemTypes": [{"descriptions": [{"cweId": "CWE-285", "lang": "en", "description": "CWE-285: Improper Authorization", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-306", "lang": "en", "description": "CWE-306: Missing Authentication for Critical Function", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-489", "lang": "en", "description": "CWE-489: Active Debug Code", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/GetSimpleCMS-CE/GetSimpleCMS-CE/security/advisories/GHSA-rw2c-w4mg-46g4", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/GetSimpleCMS-CE/GetSimpleCMS-CE/security/advisories/GHSA-rw2c-w4mg-46g4"}], "affected": [{"vendor": "GetSimpleCMS-CE", "product": "GetSimpleCMS-CE", "versions": [{"version": "<= 3.3.22", "status": "affected"}]}, {"vendor": "GetSimpleCMS", "product": "GetSimpleCMS", "versions": [{"version": "<= 3.4.0a", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-11T19:23:30.889Z"}, "descriptions": [{"lang": "en", "value": "GetSimple CMS is a content management system (CMS), and GetSimple CMS CE is the community edition of that CMS. A logic flaw in GetSimple CMS (v3.4.0a and below) and GetSimpleCMS-CE (v3.3.22 and below) allows unauthenticated attackers to create a new administrator account. The application features an automated security control designed to delete the sensitive `admin/setup.php` file post-installation. However, this control is neutralized by a self-exclusion bug within the deletion logic, leaving the setup script accessible for unauthorized account creation even after a legitimate installation is completed. As of time of publication, no known patched versions are available."}], "source": {"advisory": "GHSA-rw2c-w4mg-46g4", "discovery": "UNKNOWN"}}, "adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-53952", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-09-14T17:11:06.020188Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-14T17:11:07.019Z"}}]}}

{"affected": [{"affectedData": [{"product": "GetSimpleCMS-CE", "vendor": "GetSimpleCMS-CE", "versions": [{"status": "affected", "version": "<= 3.3.22"}]}, {"product": "GetSimpleCMS", "vendor": "GetSimpleCMS", "versions": [{"status": "affected", "version": "<= 3.4.0a"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "GetSimple CMS is a content management system (CMS), and GetSimple CMS CE is the community edition of that CMS. A logic flaw in GetSimple CMS (v3.4.0a and below) and GetSimpleCMS-CE (v3.3.22 and below) allows unauthenticated attackers to create a new administrator account. The application features an automated security control designed to delete the sensitive `admin/setup.php` file post-installation. However, this control is neutralized by a self-exclusion bug within the deletion logic, leaving the setup script accessible for unauthorized account creation even after a legitimate installation is completed. As of time of publication, no known patched versions are available."}], "id": "CVE-2026-53952", "lastModified": "2026-09-30T19:57:08.043", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-53952", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-09-14T17:11:06.020188Z", "version": "2.0.3"}}]}, "published": "2026-09-11T20:17:14.060", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/GetSimpleCMS-CE/GetSimpleCMS-CE/security/advisories/GHSA-rw2c-w4mg-46g4"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-285"}, {"lang": "en", "value": "CWE-306"}, {"lang": "en", "value": "CWE-489"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,3.4.0a]"}}], "enrichment": {"confidence": 92.0, "confidence_source": "matching", "scores": [{"score": 92.0, "source": "matching"}]}, "original": {"product": "GetSimpleCMS", "source": "cna", "vendor": "GetSimpleCMS"}, "product": "getsimplecms", "vendor": "get-simple"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,3.3.22]"}}], "enrichment": {"confidence": 88.0, "confidence_source": "matching", "scores": [{"score": 88.0, "source": "matching"}]}, "original": {"product": "GetSimpleCMS-CE", "source": "cna", "vendor": "GetSimpleCMS-CE"}, "product": "getsimple_cms", "vendor": "getsimple-ce"}], "created": "2026-09-13T19:15:14.624517+00:00", "updated": "2026-09-21T04:30:08.555021+00:00", "vendors": ["get-simple", "get-simple$PRODUCT$getsimplecms", "getsimple-ce", "getsimple-ce$PRODUCT$getsimple_cms"]}