{"id":"CVE-2026-44373","sourceIdentifier":"security-advisories@github.com","published":"2026-05-13T21:16:48.033","lastModified":"2026-10-26T17:10:03.270","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"Nitro is a next generation server toolkit. Prior to 3.0.260429-beta, an attacker could bypass a proxy route rule by sending percent-encoded path traversal (..%2f) in the URL, causing Nitro to forward a request that the upstream resolved outside the configured scope. This vulnerability is fixed in 3.0.260429-beta."},{"lang":"es","value":"Nitro es un kit de herramientas de servidor de próxima generación. Antes de 3.0.260429-beta, un atacante podría eludir una regla de ruta de proxy enviando un salto de ruta codificado por porcentaje (..%2f) en la URL, haciendo que Nitro reenviara una solicitud que el upstream resolvió fuera del alcance configurado. Esta vulnerabilidad está corregida en 3.0.260429-beta."}],"affected":[{"source":"security-advisories@github.com","affectedData":[{"vendor":"nitrojs","product":"nitro","versions":[{"version":"< 3.0.260429-beta","status":"affected"}]},{"vendor":"nitrojs","product":"nitropack","versions":[{"version":"< 2.13.4","status":"affected"}]}]}],"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:L/I:N/A:N","baseScore":5.3,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":3.9,"impactScore":1.4}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-05-14T13:12:25.544148Z","id":"CVE-2026-44373","options":[{"exploitation":"poc"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-22"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:nitro:nitro:*:*:*:*:*:node.js:*:*","versionEndExcluding":"2.13.4","matchCriteriaId":"E81D7EC1-9EE7-4CC1-8DF1-22517FF21CBE"},{"vulnerable":true,"criteria":"cpe:2.3:a:nitro:nitro:*:*:*:*:*:node.js:*:*","versionStartExcluding":"2.13.4","versionEndExcluding":"3.0.260429","matchCriteriaId":"A93AAA84-4EDA-4708-8BEC-01E4D566A7B1"}]}]}],"references":[{"url":"https://github.com/nitrojs/nitro/pull/4222","source":"security-advisories@github.com","tags":["Issue Tracking","Patch"]},{"url":"https://github.com/nitrojs/nitro/pull/4223","source":"security-advisories@github.com","tags":["Issue Tracking","Patch"]},{"url":"https://github.com/nitrojs/nitro/releases/tag/v2.13.4","source":"security-advisories@github.com","tags":["Release Notes"]},{"url":"https://github.com/nitrojs/nitro/releases/tag/v3.0.260429-beta","source":"security-advisories@github.com","tags":["Release Notes"]},{"url":"https://github.com/nitrojs/nitro/security/advisories/GHSA-5w89-w975-hf9q","source":"security-advisories@github.com","tags":["Third Party Advisory"]}]}