vuln-cve/data/2026/8xxx/CVE-2026-8417.json

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        "cveId": "CVE-2026-8417",
        "assignerOrgId": "ff5b8ace-8b95-4078-9743-eac1ca5451de",
        "state": "PUBLISHED",
        "assignerShortName": "ConcreteCMS",
        "dateReserved": "2026-05-12T17:34:46.172Z",
        "datePublished": "2026-05-21T20:19:42.643Z",
        "dateUpdated": "2026-05-22T12:14:28.774Z"
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        "cna": {
            "providerMetadata": {
                "orgId": "ff5b8ace-8b95-4078-9743-eac1ca5451de",
                "shortName": "ConcreteCMS",
                "dateUpdated": "2026-05-21T20:19:42.643Z"
            },
            "title": "Concrete CMS 9.5.0 and below is vulnerable to CSRF in do_update() in the package update controller",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "cweId": "CWE-352",
                            "description": "CWE-352 Cross-Site request forgery (CSRF)",
                            "type": "CWE"
                        }
                    ]
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            ],
            "impacts": [
                {
                    "capecId": "CAPEC-467",
                    "descriptions": [
                        {
                            "lang": "en",
                            "value": "CAPEC-467 Cross Site Identification"
                        }
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            ],
            "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"
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            "descriptions": [
                {
                    "lang": "en",
                    "value": "Concrete CMS 9.5.0 and below does not validate a CSRF token before processing requests to /dashboard/extend/update/do_update/<pkgHandle>. The do_update() method in concrete/controllers/single_page/dashboard/extend/update.php checks only canInstallPackages() before executing upgradeCoreData() and upgrade() on the named package's controller. Because the endpoint is a state-changing GET route with no token enforcement, an attacker can force an authenticated administrator to trigger a package upgrade via a single cross-site navigation.In order to be vulnerable, the victim must be passing canInstallPackages() and and a target package must already be already installed. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 7.5 with vector CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N. Thanks  https://github.com/maru1009  for reporting.",
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                            "value": "Concrete CMS 9.5.0 and below does not validate a CSRF token before processing requests to <code>/dashboard/extend/update/do_update/&lt;pkgHandle&gt;</code>. The <code>do_update()</code> method in <code>concrete/controllers/single_page/dashboard/extend/update.php</code> checks only <code>canInstallPackages()</code> before executing <code>upgradeCoreData()</code> and <code>upgrade()</code> on the named package's controller. Because the endpoint is a state-changing GET route with no token enforcement, an attacker can force an authenticated administrator to trigger a package upgrade via a single cross-site navigation.In order to be vulnerable, the victim must be passing <code>canInstallPackages()</code> and and a target package must already be already installed.&nbsp;The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of&nbsp;7.5 with vector&nbsp;CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N. Thanks&nbsp;<a target=\"_blank\" href=\"https://github.com/maru1009\">https://github.com/maru1009</a>&nbsp;for reporting.<br>"
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://documentation.concretecms.org/9-x/developers/introduction/version-history/951-release-notes",
                    "tags": [
                        "release-notes"
                    ]
                }
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                        "attackComplexity": "HIGH",
                        "attackRequirements": "PRESENT",
                        "privilegesRequired": "NONE",
                        "userInteraction": "ACTIVE",
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                        "subConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "HIGH",
                        "subIntegrityImpact": "NONE",
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                        "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": "HIGH",
                        "baseScore": 7.5,
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                                "timestamp": "2026-05-22T12:14:16.961823Z",
                                "id": "CVE-2026-8417",
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