{"id":"CVE-2026-44373","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-44373","generatedAt":"2026-10-28T00:20:19.742Z","title":"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.","description":"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.","published":"2026-05-13T21:16:48.000Z","lastModified":"2026-10-26T17:10:03.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},"cwe":["CWE-22"],"affected":["nitro/nitro"],"epss":{"score":0.00453,"percentile":0.39073,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.45%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://github.com/nitrojs/nitro/pull/4222","tags":["Issue Tracking","Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/nitrojs/nitro/pull/4223","tags":["Issue Tracking","Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/nitrojs/nitro/releases/tag/v2.13.4","tags":["Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/nitrojs/nitro/releases/tag/v3.0.260429-beta","tags":["Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/nitrojs/nitro/security/advisories/GHSA-5w89-w975-hf9q","tags":["Third Party Advisory"],"source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-44373","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}