CVE-2026-54506

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{"affected": [{"affectedData": [{"product": "Vvveb", "vendor": "givanz", "versions": [{"status": "affected", "version": "< 1.0.8.5"}]}], "source": "security-advisories@github.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Vvveb is a powerful and easy to use CMS with page builder to build websites, blogs or ecommerce stores. Prior to 1.0.8.5, app/controller/user/profile.php accepts the user[bio] field and passes stored content through sanitizeHTML() in system/functions.php, whose on* event-handler regular expression omits the forward-slash delimiter and whose do-while condition compares the string to itself, so forbidden nested tags are removed only once. An Author-role or higher user can submit solidus-prefixed event-handler markup or nested forbidden tags that survive sanitization. The stored bio is rendered without sufficient output encoding on /author/{username}, in the admin user-management view, and potentially in comment displays, causing attacker-controlled JavaScript to execute when unauthenticated visitors, administrators, or other users view the content. This can expose browser-session data and permit victim-context account actions, defacement, or phishing. This issue is fixed in version 1.0.8.5."}], "id": "CVE-2026-54506", "lastModified": "2026-09-23T20:17:11.123", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.6, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.3, "impactScore": 4.7, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-54506", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-09-23T19:09:15.788977Z", "version": "2.0.3"}}]}, "published": "2026-09-17T22:17:00.537", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/givanz/Vvveb/commit/20a01ef08559ffdc97205edeecde86c8ea27e567"}, {"source": "security-advisories@github.com", "url": "https://github.com/givanz/Vvveb/releases/tag/1.0.8.5"}, {"source": "security-advisories@github.com", "url": "https://github.com/givanz/Vvveb/security/advisories/GHSA-5cg7-phhv-4qjr"}, {"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "url": "https://github.com/givanz/Vvveb/security/advisories/GHSA-5cg7-phhv-4qjr"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}, {"lang": "en", "value": "CWE-116"}, {"lang": "en", "value": "CWE-185"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,1.0.8.5)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Vvveb", "source": "cna", "vendor": "givanz"}, "product": "vvveb", "vendor": "givanz"}], "created": "2026-09-18T11:45:07.308032+00:00", "updated": "2026-09-19T02:00:13.326638+00:00", "vendors": ["givanz", "givanz$PRODUCT$vvveb"]}