{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-04-22T14:39:40.394","vulnerabilities":[{"cve":{"id":"CVE-2023-32323","sourceIdentifier":"security-advisories@github.com","published":"2023-05-26T14:15:10.827","lastModified":"2025-02-13T17:16:30.267","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. A malicious user on a Synapse homeserver X with permission to create certain state events can disable outbound federation from X to an arbitrary homeserver Y. Synapse instances with federation disabled are not affected. In versions of Synapse up to and including 1.73, Synapse did not limit the size of `invite_room_state`, meaning that it was possible to create an arbitrarily large invite event. Synapse 1.74 refuses to create oversized `invite_room_state` fields. Server operators should upgrade to Synapse 1.74 or newer urgently."},{"lang":"es","value":"Synapse es un servidor doméstico Matrix de código abierto escrito y mantenido por la Fundación Matrix.org. Un usuario malicioso en un servidor doméstico X de Synapse con permiso para crear ciertos eventos de estado puede deshabilitar la federación saliente de X a un servidor doméstico Y arbitrario. Las instancias de Synapse con la federación deshabilitada no se ven afectadas. En las versiones de Synapse hasta la 1.73 inclusive, Synapse no limitaba el tamaño de `invite_room_state`, lo que significa que era posible crear un evento de invitación arbitrariamente grande. Synapse 1.74 se niega a crear campos `invite_room_state` de gran tamaño. Los operadores de servidores deben actualizar urgentemente a Synapse 1.74 o posterior."}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:L","baseScore":5.0,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"CHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW"},"exploitabilityScore":3.1,"impactScore":1.4},{"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:L","baseScore":4.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"LOW"},"exploitabilityScore":2.8,"impactScore":1.4}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-20"}]},{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-20"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:matrix:synapse:*:*:*:*:*:*:*:*","versionEndExcluding":"1.74.0","matchCriteriaId":"D7B262AE-3361-41B7-8BF8-D893316A98C4"}]}]}],"references":[{"url":"https://github.com/matrix-org/synapse/issues/14492","source":"security-advisories@github.com","tags":["Exploit","Issue Tracking"]},{"url":"https://github.com/matrix-org/synapse/pull/14642","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/matrix-org/synapse/security/advisories/GHSA-f3wc-3vxv-xmvr","source":"security-advisories@github.com","tags":["Mitigation","Vendor Advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UJIJRP5ZH6B3KGFLHCAKR2IX2Y4Z25QD/","source":"security-advisories@github.com"},{"url":"https://github.com/matrix-org/synapse/issues/14492","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Issue Tracking"]},{"url":"https://github.com/matrix-org/synapse/pull/14642","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"]},{"url":"https://github.com/matrix-org/synapse/security/advisories/GHSA-f3wc-3vxv-xmvr","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mitigation","Vendor Advisory"]},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UJIJRP5ZH6B3KGFLHCAKR2IX2Y4Z25QD/","source":"af854a3a-2127-422b-91ae-364da2661108"}]}}]}