{"answers":{"affected":"4 open source packages ship an affected version, including nitro and nitropack. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-44373 exists.","fix":"Upgrade nitro to 3.0.260429-beta or later.","what":"CVE-2026-44373 is a medium-severity path traversal vulnerability in nitrojs nitro, published on 13 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-44373 and fix it if it is affected.\n\nWhat it is: CVE-2026-44373 is a medium-severity path traversal vulnerability in nitrojs nitro, published on 13 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-44373 exists.\n\nAffected packages and fixed versions:\n- nitro (npm): affected all versions; fixed in 3.0.260429-beta\n- nitro (npm): affected all versions; fixed in 3.0.260429-beta\n- nitropack (npm): affected all versions; fixed in 2.13.4\n- nitropack (npm): affected all versions; fixed in 2.13.4\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-44373/ (Markdown: https://insights.sbomify.com/CVE-2026-44373/index.md)","id":"CVE-2026-44373","markdown":"https://insights.sbomify.com/CVE-2026-44373/index.md","name":"CVE-2026-44373","record":{"aliases":["GHSA-5w89-w975-hf9q"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["security_bypass","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Nitro server toolkit","requires_auth":"none","summary":"Attackers can bypass proxy route rules using percent-encoded path traversal, causing requests to be forwarded outside the configured scope.","user_interaction":"not_required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"nitro","vendor":"nitro"}],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"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.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Nitro: Proxy scope bypass via percent-encoded path traversal in `routeRules`","id":"CVE-2026-44373","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"path_traversal","year":"2026"},"n_packages":4,"n_references":5,"next":{"headline":"Backstage: Catalog unprocessed read endpoints allow authenticated cross-owner data access without permission checks","id":"CVE-2026-44374"},"packages":[{"ecosystem":"npm","fixed":["3.0.260429-beta"],"introduced":["0"],"last_affected":[],"package":"nitro","purl":null,"source":"GHSA-5w89-w975-hf9q"},{"ecosystem":"npm","fixed":["3.0.260429-beta"],"introduced":["0"],"last_affected":[],"package":"nitro","purl":"pkg:npm/nitro","source":"GHSA-5w89-w975-hf9q"},{"ecosystem":"npm","fixed":["2.13.4"],"introduced":["0"],"last_affected":[],"package":"nitropack","purl":null,"source":"GHSA-5w89-w975-hf9q"},{"ecosystem":"npm","fixed":["2.13.4"],"introduced":["0"],"last_affected":[],"package":"nitropack","purl":"pkg:npm/nitropack","source":"GHSA-5w89-w975-hf9q"}],"prev":{"headline":"Nitro: Open Redirect via Protocol-Relative URL Bypass in Wildcard Route Rules","id":"CVE-2026-44372"},"products":["nitro","nitropack"],"published":"2026-05-13","related":[{"cvss_score":5.3,"headline":"Nitro: Open Redirect via Protocol-Relative URL Bypass in Wildcard Route Rules","id":"CVE-2026-44372","kev_date_added":null,"published":"2026-05-13"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-05-14","vendors":["nitrojs"]},"summary":"Attackers can bypass proxy route rules using percent-encoded path traversal, causing requests to be forwarded outside the configured scope.","url":"https://insights.sbomify.com/CVE-2026-44373/"}