{"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":"2026-05-22T13:15:58.343Z"},"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. The 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  and also resulting in registered users able to disable the per-user-IP-pinning in the session validator which is meant to detect hijacking.  The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 5.3 with vector 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 0x4c616e 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"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-22T13:15:51.839847Z","id":"CVE-2026-8327","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-05-22T13:15:58.343Z"}}]}}