{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-29T23:13:54.124","vulnerabilities":[{"cve":{"id":"CVE-2020-26956","sourceIdentifier":"security@mozilla.org","published":"2020-12-09T01:15:12.957","lastModified":"2024-11-21T05:20:34.537","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"In some cases, removing HTML elements during sanitization would keep existing SVG event handlers and therefore lead to XSS. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5."},{"lang":"es","value":"En algunos casos, al eliminar unos elementos HTML durante el saneamiento mantendría los actuales manejadores de eventos SVG y, por lo tanto, conllevaría a un ataque de tipo XSS. Esta vulnerabilidad afecta a Firefox versiones anteriores a 83, Firefox ESR versiones anteriores a 78.5, y Thunderbird versiones anteriores a 78.5"}],"metrics":{"cvssMetricV31":[{"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":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-79"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*","versionEndExcluding":"83.0","matchCriteriaId":"9385C808-43DD-4D02-B1A9-89A2E3986DF2"},{"vulnerable":true,"criteria":"cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*","versionEndExcluding":"78.5","matchCriteriaId":"36160ED9-05B8-4E38-8C67-49EE1738AF8B"},{"vulnerable":true,"criteria":"cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*","versionEndExcluding":"78.5","matchCriteriaId":"C169EC17-3490-437D-A36B-40C3DE316175"}]}]}],"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1666300","source":"security@mozilla.org","tags":["Issue Tracking","Permissions Required","Vendor Advisory"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2020-50/","source":"security@mozilla.org","tags":["Vendor Advisory"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2020-51/","source":"security@mozilla.org","tags":["Vendor Advisory"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2020-52/","source":"security@mozilla.org","tags":["Vendor Advisory"]},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1666300","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Issue Tracking","Permissions Required","Vendor Advisory"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2020-50/","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2020-51/","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2020-52/","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"]}]}}]}