{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-04T17:53:07.712","vulnerabilities":[{"cve":{"id":"CVE-2020-26974","sourceIdentifier":"security@mozilla.org","published":"2021-01-07T14:15:12.000","lastModified":"2024-11-21T05:20:36.540","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"When flex-basis was used on a table wrapper, a StyleGenericFlexBasis object could have been incorrectly cast to the wrong type. This resulted in a heap user-after-free, memory corruption, and a potentially exploitable crash. This vulnerability affects Firefox < 84, Thunderbird < 78.6, and Firefox ESR < 78.6."},{"lang":"es","value":"Cuando flex-basis fue usada en un contenedor de tabla, un objeto StyleGenericFlexBasis podría haberse convertido incorrectamente en el tipo equivocado.&#xa0;Esto resultó en uso de la memoria previamente liberada de la pila, una corrupción de la memoria y un bloqueo potencialmente explotable.&#xa0;Esta vulnerabilidad afecta a Firefox versiones anteriores a 84, Thunderbird versiones anteriores a 78,6 y Firefox ESR versiones anteriores a 78,6"}],"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:U/C:H/I:H/A:H","baseScore":8.8,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":2.8,"impactScore":5.9}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:M/Au:N/C:P/I:P/A:P","baseScore":6.8,"accessVector":"NETWORK","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL"},"baseSeverity":"MEDIUM","exploitabilityScore":8.6,"impactScore":6.4,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":true}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-787"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*","versionEndExcluding":"84.0","matchCriteriaId":"85154F06-6654-493F-8630-38637ED7D8D0"},{"vulnerable":true,"criteria":"cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*","versionEndExcluding":"78.6.0","matchCriteriaId":"4535E34E-E949-48ED-A8F5-7D93B4731EA6"},{"vulnerable":true,"criteria":"cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*","versionEndExcluding":"78.6.0","matchCriteriaId":"048CBDDB-2C1B-415B-8DF9-54C002236180"}]}]}],"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1681022","source":"security@mozilla.org","tags":["Permissions Required"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2020-54/","source":"security@mozilla.org","tags":["Vendor Advisory"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2020-55/","source":"security@mozilla.org","tags":["Vendor Advisory"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2020-56/","source":"security@mozilla.org","tags":["Vendor Advisory"]},{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=1681022","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Permissions Required"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2020-54/","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2020-55/","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"]},{"url":"https://www.mozilla.org/security/advisories/mfsa2020-56/","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"]}]}}]}