{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-05T03:33:10.451","vulnerabilities":[{"cve":{"id":"CVE-2021-29453","sourceIdentifier":"security-advisories@github.com","published":"2021-04-19T19:15:17.717","lastModified":"2024-11-21T06:01:07.873","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"matrix-media-repo is an open-source multi-domain media repository for Matrix. Versions 1.2.6 and earlier of matrix-media-repo do not properly handle malicious images which are crafted to be small in file size, but large in complexity. A malicious user could upload a relatively small image in terms of file size, using particular image formats, which expands to have extremely large dimensions during the process of thumbnailing. The server can be exhausted of memory in the process of trying to load the whole image into memory for thumbnailing, leading to denial of service. Version 1.2.7 has a fix for the vulnerability."},{"lang":"es","value":"matrix-media-repo es un repositorio de medios multidominio de código abierto para Matrix. Versiones 1.2.6 y anteriores de matrix-media-repo, no manejan apropiadamente imágenes maliciosas que son diseñadas para ser de tamaño pequeño pero de gran complejidad. Un usuario malicioso podría cargar una imagen relativamente pequeña en términos de tamaño de archivo, usando formatos de imagen particulares, que se expande para tener dimensiones extremadamente grandes durante el proceso de thumbnailing. El servidor puede ser agotado de la memoria en el proceso de intentar cargar la imagen completa en la memoria por un thumbnailing, conllevando a una denegación de servicio. Versión 1.2.7 contiene una corrección para la vulnerabilidad"}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H","baseScore":5.7,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"REQUIRED","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":2.1,"impactScore":3.6},{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","baseScore":6.5,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":2.8,"impactScore":3.6}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:N/AC:L/Au:S/C:N/I:N/A:P","baseScore":4.0,"accessVector":"NETWORK","accessComplexity":"LOW","authentication":"SINGLE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL"},"baseSeverity":"MEDIUM","exploitabilityScore":8.0,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-400"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-770"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:matrix-media-repo_project:matrix-media-repo:*:*:*:*:*:*:*:*","versionEndExcluding":"1.2.7","matchCriteriaId":"9728E5AF-5C57-4D81-8A64-03AE9EE0327F"}]}]}],"references":[{"url":"https://github.com/turt2live/matrix-media-repo/releases/tag/v1.2.7","source":"security-advisories@github.com","tags":["Release Notes","Third Party Advisory"]},{"url":"https://github.com/turt2live/matrix-media-repo/security/advisories/GHSA-j889-h476-hh9h","source":"security-advisories@github.com","tags":["Patch","Third Party Advisory"]},{"url":"https://hub.docker.com/r/turt2live/matrix-media-repo/tags?page=1&ordering=last_updated","source":"security-advisories@github.com","tags":["Third Party Advisory"]},{"url":"https://github.com/turt2live/matrix-media-repo/releases/tag/v1.2.7","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Release Notes","Third Party Advisory"]},{"url":"https://github.com/turt2live/matrix-media-repo/security/advisories/GHSA-j889-h476-hh9h","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Third Party Advisory"]},{"url":"https://hub.docker.com/r/turt2live/matrix-media-repo/tags?page=1&ordering=last_updated","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"]}]}}]}