{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-05-24T11:23:32.059","vulnerabilities":[{"cve":{"id":"CVE-2026-27889","sourceIdentifier":"security-advisories@github.com","published":"2026-03-25T20:16:27.210","lastModified":"2026-03-26T17:13:16.140","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Starting in version 2.2.0 and prior to versions 2.11.14 and 2.12.5, a missing sanity check on a WebSockets frame could trigger a server panic in the nats-server.  This happens before authentication, and so is exposed to anyone who can connect to the websockets port. Versions 2.11.14 and 2.12.5 contains a fix. A workaround is available. The vulnerability only affects deployments which use WebSockets and which expose the network port to untrusted end-points. If one is able to do so, a defense in depth of restricting either of these will mitigate the attack."},{"lang":"es","value":"NATS-Server es un servidor de alto rendimiento para NATS.io, un sistema de mensajería nativo de la nube y del borde. A partir de la versión 2.2.0 y antes de las versiones 2.11.14 y 2.12.5, una comprobación de cordura faltante en un marco de WebSockets podría desencadenar un pánico del servidor en el nats-server. Esto ocurre antes de la autenticación, y por lo tanto está expuesto a cualquiera que pueda conectarse al puerto de websockets. Las versiones 2.11.14 y 2.12.5 contienen una corrección. Una solución alternativa está disponible. La vulnerabilidad solo afecta a las implementaciones que usan WebSockets y que exponen el puerto de red a puntos finales no confiables. Si uno es capaz de hacerlo, una defensa en profundidad de restringir cualquiera de estos mitigará el ataque."}],"metrics":{"cvssMetricV31":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Primary","description":[{"lang":"en","value":"CWE-190"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:linuxfoundation:nats-server:*:*:*:*:*:*:*:*","versionStartIncluding":"2.2.0","versionEndExcluding":"2.11.14","matchCriteriaId":"6681EAC6-5A1D-4F3A-926C-F7BEB21791AA"},{"vulnerable":true,"criteria":"cpe:2.3:a:linuxfoundation:nats-server:*:*:*:*:*:*:*:*","versionStartIncluding":"2.12.0","versionEndExcluding":"2.12.5","matchCriteriaId":"B141DA72-3502-4746-A246-EE1087C993F4"}]}]}],"references":[{"url":"https://advisories.nats.io/CVE/secnote-2026-03.txt","source":"security-advisories@github.com","tags":["Mitigation","Vendor Advisory"]},{"url":"https://github.com/nats-io/nats-server/security/advisories/GHSA-pq2q-rcw4-3hr6","source":"security-advisories@github.com","tags":["Mitigation","Vendor Advisory"]}]}}]}