{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-44373","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-05-05T20:15:20.631Z","datePublished":"2026-05-13T20:26:28.255Z","dateUpdated":"2026-05-14T13:16:50.542Z"},"containers":{"cna":{"title":"Nitro: Proxy scope bypass via percent-encoded path traversal in `routeRules`","problemTypes":[{"descriptions":[{"cweId":"CWE-22","lang":"en","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/nitrojs/nitro/security/advisories/GHSA-5w89-w975-hf9q","tags":["x_refsource_CONFIRM"],"url":"https://github.com/nitrojs/nitro/security/advisories/GHSA-5w89-w975-hf9q"},{"name":"https://github.com/nitrojs/nitro/pull/4222","tags":["x_refsource_MISC"],"url":"https://github.com/nitrojs/nitro/pull/4222"},{"name":"https://github.com/nitrojs/nitro/pull/4223","tags":["x_refsource_MISC"],"url":"https://github.com/nitrojs/nitro/pull/4223"},{"name":"https://github.com/nitrojs/nitro/releases/tag/v2.13.4","tags":["x_refsource_MISC"],"url":"https://github.com/nitrojs/nitro/releases/tag/v2.13.4"},{"name":"https://github.com/nitrojs/nitro/releases/tag/v3.0.260429-beta","tags":["x_refsource_MISC"],"url":"https://github.com/nitrojs/nitro/releases/tag/v3.0.260429-beta"}],"affected":[{"vendor":"nitrojs","product":"nitro","versions":[{"version":"< 3.0.260429-beta","status":"affected"}]},{"vendor":"nitrojs","product":"nitropack","versions":[{"version":"< 2.13.4","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-05-13T20:26:28.255Z"},"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."}],"source":{"advisory":"GHSA-5w89-w975-hf9q","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-14T13:12:25.544148Z","id":"CVE-2026-44373","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-05-14T13:16:50.542Z"}}]}}