{"affected":[{"affectedData":[{"product":"magento-lts","vendor":"OpenMage","versions":[{"status":"affected","version":"<= 19.4.12"},{"status":"affected","version":"<= 20.0.8"}]}],"source":"security-advisories@github.com"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:openmage:magento:*:*:*:*:lts:*:*:*","matchCriteriaId":"1A4C7D1B-4241-408B-BD8C-7B996FAC4D0E","versionEndExcluding":"19.4.13","vulnerable":true},{"criteria":"cpe:2.3:a:openmage:magento:*:*:*:*:lts:*:*:*","matchCriteriaId":"713655CF-09C7-4347-A8D1-4B226F1DE312","versionEndExcluding":"20.0.9","versionStartIncluding":"20.0.0","vulnerable":true}],"negate":false,"operator":"OR"}]}],"cveTags":[],"descriptions":[{"lang":"en","value":"Magento-lts is a long-term support alternative to Magento Community Edition (CE). In magento-lts versions 19.4.12 and prior and 20.0.8 and prior, there is a vulnerability caused by the unsecured deserialization of an object. A patch in versions 19.4.13 and 20.0.9 was back ported from Zend Framework 3. The vulnerability was assigned CVE-2021-3007 in Zend Framework."},{"lang":"es","value":"Magento-lts es una alternativa de soporte a largo plazo a Magento Community Edition (CE).&#xa0;En magento-lts versiones 19.4.12 y anteriores y versiones 20.0.8 y anteriores, se presenta una vulnerabilidad causada por una deserialización no segura de un objeto.&#xa0;Un parche en versiones 19.4.13 y 20.0.9 fue actualizado desde Zend Framework 3. La vulnerabilidad fue asignada CVE-2021-3007 en Zend Framework"}],"id":"CVE-2021-21426","lastModified":"2026-06-17T03:35:33.210","metrics":{"cvssMetricV2":[{"acInsufInfo":false,"baseSeverity":"HIGH","cvssData":{"accessComplexity":"LOW","accessVector":"NETWORK","authentication":"NONE","availabilityImpact":"PARTIAL","baseScore":7.5,"confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:P","version":"2.0"},"exploitabilityScore":10.0,"impactScore":6.4,"obtainAllPrivilege":false,"obtainOtherPrivilege":false,"obtainUserPrivilege":false,"source":"nvd@nist.gov","type":"Primary","userInteractionRequired":false}],"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"exploitabilityScore":3.9,"impactScore":5.9,"source":"security-advisories@github.com","type":"Secondary"},{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"exploitabilityScore":3.9,"impactScore":5.9,"source":"nvd@nist.gov","type":"Primary"}]},"published":"2021-04-21T21:15:07.960","references":[{"source":"security-advisories@github.com","tags":["Third Party Advisory"],"url":"https://github.com/OpenMage/magento-lts/security/advisories/GHSA-m496-x567-f98c"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"],"url":"https://github.com/OpenMage/magento-lts/security/advisories/GHSA-m496-x567-f98c"}],"sourceIdentifier":"security-advisories@github.com","vulnStatus":"Modified","weaknesses":[{"description":[{"lang":"en","value":"CWE-502"}],"source":"security-advisories@github.com","type":"Secondary"}]}