{"cvss":9.4,"datePublished":"2026-07-29T13:19:10.820","dateUpdated":"2026-10-23T23:10:00.157","description":"Joomla Extension - balbooa.com - Authenticated arbitrary file upload in Gridbox < 2.20.2 - File upload methods allows authenticated attackers to upload arbitrary files. Turns into an authenticated RCE if combined with CVE-2026-65884 as the required account can be created by the attacker.","id":"CVE-2026-65885","raw":{"affected":[{"affectedData":[{"defaultStatus":"unaffected","packageName":"com_gridbox","product":"Gridbox extension for Joomla","vendor":"balbooa.com","versions":[{"status":"affected","version":"1.0.0-2.20.1"}]}],"source":"security@joomla.org"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:balbooa:gridbox:*:*:*:*:*:joomla\\!:*:*","matchCriteriaId":"94D01B09-FAE8-4E62-839F-16A6F07B736C","versionEndExcluding":"2.20.2","vulnerable":true}],"negate":false,"operator":"OR"}]}],"cveTags":[],"descriptions":[{"lang":"en","value":"Joomla Extension - balbooa.com - Authenticated arbitrary file upload in Gridbox < 2.20.2 - File upload methods allows authenticated attackers to upload arbitrary files. Turns into an authenticated RCE if combined with CVE-2026-65884 as the required account can be created by the attacker."},{"lang":"es","value":"Extensión de Joomla - balbooa.com - Carga de archivos arbitrarios autenticada en Gridbox anterior a 2.20.2 - Los métodos de carga de archivos permiten a los atacantes autenticados cargar archivos arbitrarios. Se convierte en una RCE autenticada si se combina con CVE-2026-65884, ya que la cuenta requerida puede ser creada por el atacante."}],"id":"CVE-2026-65885","lastModified":"2026-10-23T23:10:00.157","metrics":{"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":8.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"exploitabilityScore":2.8,"impactScore":5.9,"source":"nvd@nist.gov","type":"Primary"}],"cvssMetricV40":[{"cvssData":{"Automatable":"YES","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","availabilityRequirement":"NOT_DEFINED","baseScore":9.4,"baseSeverity":"CRITICAL","confidentialityRequirement":"NOT_DEFINED","exploitMaturity":"ATTACKED","integrityRequirement":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","privilegesRequired":"HIGH","providerUrgency":"RED","subAvailabilityImpact":"HIGH","subConfidentialityImpact":"HIGH","subIntegrityImpact":"HIGH","userInteraction":"NONE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:X/RE:X/U:Red","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnerabilityResponseEffort":"NOT_DEFINED"},"source":"security@joomla.org","type":"Secondary"}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"id":"CVE-2026-65885","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"total"}],"role":"CISA Coordinator","timestamp":"2026-07-29T00:00:00+00:00","version":"2.0.3"}}]},"published":"2026-07-29T13:19:10.820","references":[{"source":"security@joomla.org","tags":["Third Party Advisory"],"url":"https://mysites.guru/blog/gridbox-23-critical-vulnerabilities/"},{"source":"security@joomla.org","tags":["Product"],"url":"https://www.balbooa.com/gridbox"}],"sourceIdentifier":"security@joomla.org","vulnStatus":"Analyzed","weaknesses":[{"description":[{"lang":"en","value":"CWE-434"}],"source":"security@joomla.org","type":"Secondary"}]},"severity":"CRITICAL","source":"nvd","title":"Joomla Extension - balbooa.com - Authenticated arbitrary file upload in Gridbox < 2.20.2 - File upload methods allows..."}