{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-8245", "assignerOrgId": "ff5b8ace-8b95-4078-9743-eac1ca5451de", "state": "PUBLISHED", "assignerShortName": "ConcreteCMS", "dateReserved": "2026-05-09T16:38:53.682Z", "datePublished": "2026-05-21T21:14:18.940Z", "dateUpdated": "2026-05-21T21:14:18.940Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "ff5b8ace-8b95-4078-9743-eac1ca5451de", "shortName": "ConcreteCMS", "dateUpdated": "2026-05-21T21:14:18.940Z"}, "title": "Concrete CMS 9.5.0 and below is vulnerable to Reflected XSS in Legacy Pagination via HTML attribute injection", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-83", "description": "CWE-83 Improper neutralization of script in attributes in a web page", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-243", "descriptions": [{"lang": "en", "value": "CAPEC-243 XSS Targeting HTML Attributes"}]}], "affected": [{"vendor": "Concrete CMS", "product": "Concrete CMS", "collectionURL": "https://github.com/concretecms/concretecms", "repo": "https://github.com/concretecms/concretecms", "versions": [{"status": "affected", "version": "5.0", "lessThanOrEqual": "9.5.0", "versionType": "git"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "Concrete CMS 9.5.0 and below is vulnerable to Reflected XSS in Legacy Pagination via HTML attribute injection.\u00a0Concrete\\Core\\Legacy\\Pagination builds pagination links by raw-interpolating its $URL field into href=\"\" (<a href=\"{$linkURL}\" \u2026>).\u00a0Any authenticated admin or report viewer with access to `/dashboard/reports/forms/legacy` who clicks the crafted URL fires the payload in their session.\u00a0The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of\u00a06.0 with vector\u00a0CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks\u00a0Yonatan Drori (Tenzai) for reporting", "supportingMedia": [{"type": "text/html", "base64": false, "value": "Concrete CMS 9.5.0 and below is vulnerable to Reflected XSS in Legacy Pagination via HTML attribute injection.&nbsp;<code>Concrete\\Core\\Legacy\\Pagination</code> builds pagination links by raw-interpolating its <code>$URL</code> field into <code>href=\"\"</code> (<code>&lt;a href=\"{$linkURL}\" \u2026&gt;</code>).&nbsp;Any authenticated admin or report viewer with access to `/dashboard/reports/forms/legacy` who clicks the crafted URL fires the payload in their session.&nbsp;The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of&nbsp;6.0 with vector&nbsp;CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N. Thanks&nbsp;Yonatan Drori (Tenzai) for reporting&nbsp;"}]}], "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": "PRESENT", "privilegesRequired": "NONE", "userInteraction": "PASSIVE", "vulnConfidentialityImpact": "HIGH", "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": 6, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N"}}], "credits": [{"lang": "en", "value": "Yonatan Drori (Tenzai)", "type": "finder"}], "source": {"defect": ["HackerOne"], "advisory": "https://hackerone.com/reports/3715249", "discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 1.0.2"}}}}

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