{"id":"CVE-2026-44373","summary":"Nitro: Proxy scope bypass via percent-encoded path traversal in `routeRules`","details":"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.","aliases":["GHSA-5w89-w975-hf9q"],"modified":"2026-07-08T08:13:29.946278657Z","published":"2026-05-13T20:26:28.255Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44373.json","cwe_ids":["CWE-22"],"cna_assigner":"GitHub_M"},"references":[{"type":"WEB","url":"https://github.com/nitrojs/nitro/releases/tag/v2.13.4"},{"type":"WEB","url":"https://github.com/nitrojs/nitro/releases/tag/v3.0.260429-beta"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44373.json"},{"type":"ADVISORY","url":"https://github.com/nitrojs/nitro/security/advisories/GHSA-5w89-w975-hf9q"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44373"},{"type":"FIX","url":"https://github.com/nitrojs/nitro/pull/4222"},{"type":"FIX","url":"https://github.com/nitrojs/nitro/pull/4223"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/nitrojs/nitro","events":[{"introduced":"0"},{"fixed":"f92e684736169f8b1d563fd6154060643d05f4bb"},{"fixed":"c467f13eacaa3100f565b0ec57eefecad847aac4"}],"database_specific":{"source":["CPE_RANGE","REFERENCES"],"extracted_events":[{"introduced":"0"},{"fixed":"2.13.4"}],"cpe":"cpe:2.3:a:nitro:nitro:*:*:*:*:*:node.js:*:*"}}],"versions":["v2.13.4","v3.0.260415-beta","v2.13.3","v3.0.260311-beta","v3.0.1-alpha.2","v2.13.0","v3.0.1-alpha.1","v2.12.8","v3.0.1-alpha.0","v2.12.0","v2.11.13","v2.11.9","v2.11.6","v2.11.5","v2.11.4","v2.11.3","v2.11.2","v2.11.1","v2.11.0","v2.10.4","v2.10.3","v2.10.2","v2.10.1","v2.10.0","v2.9.6","v2.9.5","v2.9.4","v2.9.3","v2.9.2","v2.9.1","v2.9.0","v2.8.1","v2.8.0","v2.7.1","v2.7.0","v2.6.3","v2.6.2","v2.6.1","v2.6.0","v0.0.5","v0.0.4","v2.5.2","v2.5.1","v2.5.0","v0.0.3","v0.0.2","v2.3.4","v2.4.0","v2.3.3","v2.3.2","v2.3.1","v2.3.0","v2.2.3","v2.2.2","v2.2.1","v2.2.0","v2.1.2","v2.1.1","v2.1.0","v2.0.0","v2.0.0-rc.1","v2.0.0-rc.0","v1.0.0","v1.0.0-1","v1.0.0-0","v0.6.2","v0.6.1","v0.6.0","v0.5.4","v0.5.3","v0.5.2","v0.5.1","v0.5.0","v0.4.24","v0.4.23","v0.4.22","v0.4.21","v0.4.20","v0.4.19","v0.4.18","v0.4.17","v0.4.16","v0.4.15","v0.4.14","v0.4.13","v0.4.12","v0.4.11","v0.4.10","v0.4.9","v0.4.8","v0.4.7","v0.4.6","v0.4.5","v0.4.4","v0.4.3","v0.4.2","v0.4.1","v0.4.0","v0.3.12","v0.3.11","v0.3.10","v0.3.9","v0.3.8","v0.3.7","v0.3.6","v0.3.5","v0.3.4","v0.3.3","v0.3.2","v0.3.1","v0.3.0","v0.2.11","v0.2.10","v0.2.9","v0.2.8","v0.2.7","v0.2.6","v0.2.5","v0.2.4","v0.2.3","v0.2.2","v0.2.1","v0.2.0","v0.1.4","v0.1.3","v0.1.2","v0.1.1","v0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44373.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"}]}