CVE-2026-29204

{"id": "CVE-2026-29204", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-29204", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-05-12T21:10:39.672400Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "support@hackerone.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.1, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.2, "exploitabilityScore": 3.9}]}, "affected": [{"source": "support@hackerone.com", "affectedData": [{"vendor": "WebPros", "product": "WHMCS", "versions": [{"status": "affected", "version": "7.4.0", "versionType": "semver", "lessThanOrEqual": "18.12.2"}, {"status": "affected", "version": "18.13.0", "lessThan": "18.13.3", "versionType": "semver"}, {"status": "affected", "version": "9.0.0", "lessThan": "9.0.4", "versionType": "semver"}], "defaultStatus": "unaffected"}]}], "published": "2026-05-12T18:16:51.030", "references": [{"url": "https://help.whmcs.com/m/125386/l/2073908-cve-2026-29204", "source": "support@hackerone.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "support@hackerone.com", "description": [{"lang": "en", "value": "CWE-639"}]}], "descriptions": [{"lang": "en", "value": "Insufficient ownership check in `clientarea.php` allows an authenticated client area user to submit requests using another user\u2019s `addonId` without any ownership validation leading to unauthorized access to the victim's account."}], "lastModified": "2026-06-17T10:29:46.857", "sourceIdentifier": "support@hackerone.com"}