{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-19T18:33:57.180","vulnerabilities":[{"cve":{"id":"CVE-2021-43817","sourceIdentifier":"security-advisories@github.com","published":"2021-12-13T20:15:07.700","lastModified":"2024-11-21T06:29:51.367","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"Collabora Online is a collaborative online office suite based on LibreOffice technology. In affected versions a reflected XSS vulnerability was found in Collabora Online. An attacker could inject unescaped HTML into a variable as they created the Collabora Online iframe, and execute scripts inside the context of the Collabora Online iframe. This would give access to a small set of user settings stored in the browser, as well as the session's authentication token which was also passed in at iframe creation time. Users should upgrade to Collabora Online 6.4.16 or higher or Collabora Online 4.2.20 or higher. Collabora Online Development Edition 21.11 is not affected."},{"lang":"es","value":"Collabora Online es una suite ofimática colaborativa online basada en la tecnología de LibreOffice. En las versiones afectadas fué encontrada una vulnerabilidad de tipo XSS reflejada en Collabora Online. Un atacante podía inyectar HTML sin esconder en una variable al crear el iframe de Collabora Online, y ejecutar scripts dentro del contexto del iframe de Collabora Online. Esto daría acceso a un pequeño conjunto de configuraciones de usuario almacenadas en el navegador, así como al token de autenticación de la sesión que también era pasado en el momento de la creación del iframe. Los usuarios deben actualizar a Collabora Online versiones 6.4.16 o superior o Collabora Online 4.2.20 o superior. Collabora Online Development Edition versión 21.11 no está afectada"}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N","baseScore":8.2,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"HIGH","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":4.7},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","baseScore":6.1,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"CHANGED","confidentialityImpact":"LOW","integrityImpact":"LOW","availabilityImpact":"NONE"},"exploitabilityScore":2.8,"impactScore":2.7}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:M/Au:N/C:N/I:P/A:N","baseScore":4.3,"accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"PARTIAL","availabilityImpact":"NONE"},"baseSeverity":"MEDIUM","exploitabilityScore":8.6,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":true}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-79"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:collabora:online:*:*:*:*:*:*:*:*","versionEndExcluding":"4.2.20","matchCriteriaId":"257D3870-7490-45B9-87F6-B28EADBA332A"},{"vulnerable":true,"criteria":"cpe:2.3:a:collabora:online:*:*:*:*:*:*:*:*","versionStartIncluding":"6.4.0","versionEndExcluding":"6.4.16","matchCriteriaId":"F8600BC9-AEE4-41E4-B88B-F9761CF3D1D3"}]}]}],"references":[{"url":"https://github.com/CollaboraOnline/online/security/advisories/GHSA-7f6h-v9mx-58q9","source":"security-advisories@github.com","tags":["Third Party Advisory"]},{"url":"https://github.com/CollaboraOnline/online/security/advisories/GHSA-7f6h-v9mx-58q9","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"]}]}}]}