{"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": "2026-05-13T20:26:28.255Z"}, "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"}}}}

{}

{"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."}], "id": "CVE-2026-44373", "lastModified": "2026-05-13T21:16:48.033", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 3.9, "impactScore": 1.4, "source": "security-advisories@github.com", "type": "Secondary"}]}, "published": "2026-05-13T21:16:48.033", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/nitrojs/nitro/pull/4222"}, {"source": "security-advisories@github.com", "url": "https://github.com/nitrojs/nitro/pull/4223"}, {"source": "security-advisories@github.com", "url": "https://github.com/nitrojs/nitro/releases/tag/v2.13.4"}, {"source": "security-advisories@github.com", "url": "https://github.com/nitrojs/nitro/releases/tag/v3.0.260429-beta"}, {"source": "security-advisories@github.com", "url": "https://github.com/nitrojs/nitro/security/advisories/GHSA-5w89-w975-hf9q"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

{"created": "2026-05-13T22:45:06.115566+00:00", "updated": "2026-05-13T22:45:06.115576+00:00", "vendors": []}