{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-8327", "assignerOrgId": "ff5b8ace-8b95-4078-9743-eac1ca5451de", "state": "PUBLISHED", "assignerShortName": "ConcreteCMS", "dateReserved": "2026-05-11T14:21:53.569Z", "datePublished": "2026-05-21T21:15:31.647Z", "dateUpdated": "2026-05-21T21:15:31.647Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "ff5b8ace-8b95-4078-9743-eac1ca5451de", "shortName": "ConcreteCMS", "dateUpdated": "2026-05-21T21:15:31.647Z"}, "title": "Concrete CMS below 9.5.0 and below is vulnerable to password change without reauthorization and session-hardening bypass.", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-915", "description": "CWE-915 Improperly controlled modification of Dynamically-Determined object attributes", "type": "CWE"}]}, {"descriptions": [{"lang": "en", "cweId": "CWE-620", "description": "CWE-620 Unverified password change", "type": "CWE"}]}, {"descriptions": [{"lang": "en", "cweId": "CWE-269", "description": "CWE-269 Improper Privilege Management", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-77", "descriptions": [{"lang": "en", "value": "CAPEC-77 Manipulating User-Controlled Variables"}]}], "affected": [{"vendor": "Concrete CMS", "product": "Concrete CMS", "collectionURL": "https://github.com/concretecms/concretecms", "repo": "https://github.com/concretecms/concretecms", "versions": [{"status": "affected", "version": "5", "lessThanOrEqual": "9.5.0", "versionType": "git"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "Concrete CMS below 9.5.0 and below is vulnerable to password change without reauthorization and session-hardening bypass.\u00a0The user-profile edit controller passes the entire raw POST array to UserInfo::update() without field whitelisting resulting in password change without requiring the current password\u00a0 and also resulting in registered users able to disable the per-user-IP-pinning in the session validator which is meant to detect hijacking.\u00a0\u00a0The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 5.3 with vector\u00a0CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks\u00a00x4c616e for reporting.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "<div><br></div><div><span>Concrete CMS below 9.5.0 and below is vulnerable to p</span><span>assword change without reauthorization and session-hardening bypass.&nbsp;</span><span>The user-profile edit controller passes the </span><span>entire raw POST array</span><span> to </span><code>UserInfo::update()</code><span> without field whitelisting resulting in password change without requiring the current password&nbsp; and also resulting in registered users able to disable the per-user-IP-pinning in the session validator which is meant to detect hijacking.&nbsp;&nbsp;</span><span>The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 5.3 with vector&nbsp;CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks&nbsp;0x4c616e for reporting.&nbsp;</span></div>"}]}], "references": [{"url": "https://documentation.concretecms.org/9-x/developers/introduction/version-history/951-release-notes", "tags": ["release-notes"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "NONE", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "NONE", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "MEDIUM", "baseScore": 5.3, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"}}], "credits": [{"lang": "en", "value": "0x4c616e", "type": "finder"}], "source": {"defect": ["HackerOne"], "advisory": "https://hackerone.com/reports/3636712", "discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 1.0.2"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Concrete CMS below 9.5.0 and below is vulnerable to password change without reauthorization and session-hardening bypass.\u00a0The user-profile edit controller passes the entire raw POST array to UserInfo::update() without field whitelisting resulting in password change without requiring the current password\u00a0 and also resulting in registered users able to disable the per-user-IP-pinning in the session validator which is meant to detect hijacking.\u00a0\u00a0The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 5.3 with vector\u00a0CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks\u00a00x4c616e for reporting."}], "id": "CVE-2026-8327", "lastModified": "2026-05-21T22:16:50.373", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 5.3, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "ff5b8ace-8b95-4078-9743-eac1ca5451de", "type": "Secondary"}]}, "published": "2026-05-21T22:16:50.373", "references": [{"source": "ff5b8ace-8b95-4078-9743-eac1ca5451de", "url": "https://documentation.concretecms.org/9-x/developers/introduction/version-history/951-release-notes"}], "sourceIdentifier": "ff5b8ace-8b95-4078-9743-eac1ca5451de", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-269"}, {"lang": "en", "value": "CWE-620"}, {"lang": "en", "value": "CWE-915"}], "source": "ff5b8ace-8b95-4078-9743-eac1ca5451de", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[5,9.5.0]"}}], "enrichment": {"confidence": 98.0, "confidence_source": "matching", "scores": [{"score": 98.0, "source": "matching"}]}, "original": {"product": "Concrete CMS", "source": "cna", "vendor": "Concrete CMS"}, "product": "concrete_cms", "vendor": "concretecms"}], "created": "2026-05-21T22:30:20.373450+00:00", "updated": "2026-05-21T22:30:20.373489+00:00", "vendors": ["concretecms", "concretecms$PRODUCT$concrete_cms"]}