{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-66490","assignerOrgId":"6ff30186-7fb7-4ad9-be33-533e7b05e586","state":"PUBLISHED","assignerShortName":"Joomla","dateReserved":"2026-07-27T13:01:42.270Z","datePublished":"2026-07-29T13:54:24.941Z","dateUpdated":"2026-08-12T13:52:50.243Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","packageName":"com_gridbox","product":"Gridbox extension for Joomla","vendor":"balbooa.com","versions":[{"status":"affected","version":"1.0.0-2.20.1"}]}],"credits":[{"lang":"en","type":"finder","value":"Phil Taylor, mysites.guru"}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"Joomla Extension - balbooa.com - Stored cross-site scripting via a comment avatar in Gridbox < 2.20.2"}],"value":"Joomla Extension - balbooa.com - Stored cross-site scripting via a comment avatar in Gridbox < 2.20.2"}],"impacts":[{"capecId":"CAPEC-18","descriptions":[{"lang":"en","value":"CAPEC-18 XSS Targeting Non-Script Elements"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","description":"CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"6ff30186-7fb7-4ad9-be33-533e7b05e586","shortName":"Joomla","dateUpdated":"2026-08-12T13:52:50.243Z"},"references":[{"tags":["product"],"url":"https://www.balbooa.com/gridbox"},{"tags":["third-party-advisory"],"url":"https://mysites.guru/blog/gridbox-23-critical-vulnerabilities/"}],"source":{"discovery":"UNKNOWN"},"title":"Joomla Extension - balbooa.com - Stored cross-site scripting via a comment avatar in Gridbox < 2.20.2","x_generator":{"engine":"Vulnogram 0.1.0-dev"}},"adp":[{"metrics":[{"cvssV3_1":{"scope":"CHANGED","version":"3.1","baseScore":6.1,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","integrityImpact":"LOW","userInteraction":"REQUIRED","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"LOW"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-07-29T14:42:53.533293Z","id":"CVE-2026-66490","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":"2026-07-29T14:42:57.022Z"}}]}}