{"id":"CVE-2023-34062","aliases":["CLSA-2026-1767744512","CLSA-2026-1768435721","CLSA-2026-1775003155","CLSA-2026-1776126825","CLSA-2026-1793345120","CLSA-2026-1793619094","EUVD-2023-3062","GHSA-xjhv-p3fv-x24r","ROOT-APP-MAVEN-CVE-2023-34062"],"status":"published","title":"In Reactor Netty HTTP Server a malicious user can send a request using a specially crafted URL that can lead to a directory traversal attack","description":"In Reactor Netty HTTP Server, versions 1.1.x prior to 1.1.13 and versions 1.0.x prior to 1.0.39, a malicious user can send a request using a specially crafted URL that can lead to a directory traversal attack.\n\nSpecifically, an application is vulnerable if Reactor Netty HTTP Server is configured to serve static resources.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.01124,"percentile":0.66538,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-22"],"published":"2023-11-15T09:46:42Z","modified":"2026-11-02T19:46:33Z","fixes":[{"ecosystem":"Maven","package":"io.projectreactor.netty:reactor-netty-http","fixed_in":["1.1.13","1.0.39"],"sources":["ghsa","osv"]},{"ecosystem":"TuxCare:Maven","package":"io.projectreactor.netty:reactor-netty-http","fixed_in":["1.0.7-tuxcare.1"],"sources":["osv"]},{"ecosystem":"Root:Maven","package":"io.root.io.projectreactor.netty:reactor-netty-http","fixed_in":["1.1.10-root.io.1","1.1.10-root.io.4","1.1.10-root.io.5","1.1.13-root.io.1","1.1.13-root.io.2","1.1.13-root.io.3"],"sources":["osv"]},{"ecosystem":"Root:Maven","package":"io.projectreactor.netty:reactor-netty-http","fixed_in":["1.1.10-aikido.5","1.1.13-aikido.3"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"io.projectreactor.netty:reactor-netty-http","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.1.0"},{"fixed":"1.1.13"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"io.projectreactor.netty:reactor-netty-http","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.0"},{"fixed":"1.0.39"}]}]},{"source":"osv","ecosystem":"TuxCare:Maven","package":"io.projectreactor.netty:reactor-netty-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.32"},{"fixed":"1.0.32-tuxcare.1"}]}],"versions":["1.0.32"],"bundled":2},{"source":"osv","ecosystem":"TuxCare:Maven","package":"io.projectreactor.netty:reactor-netty-http","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.32"},{"fixed":"1.0.32-tuxcare.1"}]}],"versions":["1.0.32"],"bundled":2},{"source":"osv","ecosystem":"TuxCare:Maven","package":"io.projectreactor.netty:reactor-netty-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.23"},{"fixed":"1.0.23-tuxcare.1"}]}],"versions":["1.0.23"],"bundled":4},{"source":"osv","ecosystem":"TuxCare:Maven","package":"io.projectreactor.netty:reactor-netty-http","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.23"},{"fixed":"1.0.23-tuxcare.1"}]}],"versions":["1.0.23"],"bundled":4},{"source":"osv","ecosystem":"TuxCare:Maven","package":"io.projectreactor.netty:reactor-netty-http","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.0"},{"fixed":"1.0.0-tuxcare.1"}]}],"versions":["1.0.0"],"bundled":2},{"source":"osv","ecosystem":"TuxCare:Maven","package":"io.projectreactor.netty:reactor-netty-http","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.7"},{"fixed":"1.0.7-tuxcare.1"}]}],"versions":["1.0.7"]},{"source":"osv","ecosystem":"TuxCare:Maven","package":"io.projectreactor.netty:reactor-netty","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.34"},{"fixed":"1.0.34-tuxcare.1"}]}],"versions":["1.0.34"],"bundled":8},{"source":"osv","ecosystem":"TuxCare:Maven","package":"io.projectreactor.netty:reactor-netty-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.34"},{"fixed":"1.0.34-tuxcare.1"}]}],"versions":["1.0.34"],"bundled":8},{"source":"osv","ecosystem":"TuxCare:Maven","package":"io.projectreactor.netty:reactor-netty-http","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.34"},{"fixed":"1.0.34-tuxcare.1"}]}],"versions":["1.0.34"],"bundled":8},{"source":"osv","ecosystem":"TuxCare:Maven","package":"io.projectreactor.netty:reactor-netty-http-brave","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.34"},{"fixed":"1.0.34-tuxcare.1"}]}],"versions":["1.0.34"],"bundled":8},{"source":"osv","ecosystem":"TuxCare:Maven","package":"io.projectreactor.netty:reactor-netty","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.18"},{"fixed":"1.0.18-tuxcare.1"}]}],"versions":["1.0.18"],"bundled":4},{"source":"osv","ecosystem":"TuxCare:Maven","package":"io.projectreactor.netty:reactor-netty-http","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.18"},{"fixed":"1.0.18-tuxcare.1"}]}],"versions":["1.0.18"],"bundled":4},{"source":"osv","ecosystem":"Maven","package":"io.projectreactor.netty:reactor-netty-http","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.1.0"},{"fixed":"1.1.13"}]}],"versions":["1.1.0","1.1.1","1.1.10","1.1.11","1.1.12","1.1.2","1.1.3","1.1.4","1.1.5","1.1.6","1.1.7","1.1.8","1.1.9"]},{"source":"osv","ecosystem":"Maven","package":"io.projectreactor.netty:reactor-netty-http","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.0.0"},{"fixed":"1.0.39"}]}],"versions":["1.0.0","1.0.1","1.0.10","1.0.11","1.0.12","1.0.13","1.0.14","1.0.15","1.0.16","1.0.17","1.0.18","1.0.19","1.0.2","1.0.20","1.0.21","1.0.22","1.0.23","1.0.24","1.0.25","1.0.26","1.0.27","1.0.28","1.0.29","1.0.3","1.0.30","1.0.31","1.0.32","1.0.33","1.0.34","1.0.35","1.0.36","1.0.37","1.0.38","1.0.4","1.0.5","1.0.6","1.0.7","1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netty"}],"references":[{"url":"https://spring.io/security/cve-2023-34062","tags":["x_transferred","Vendor Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-34062","tags":["advisory"]},{"url":"https://github.com/reactor/reactor-netty/commit/b1dd46b9a424ca27f7f770be6561faa84d812e5b","tags":["web"]},{"url":"https://github.com/advisories/GHSA-xjhv-p3fv-x24r"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/34xxx/CVE-2023-34062.json","tags":["advisory"]},{"url":"https://github.com/reactor/reactor-netty","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2023-34062","description":"In Reactor Netty HTTP Server, versions 1.1.x prior to 1.1.13 and versions 1.0.x prior to 1.0.39, a malicious user can send a request using a specially crafted URL that can lead to a directory traversal attack.\n\nSpecifically, an application is vulnerable if Reactor Netty HTTP Server is configured to serve static 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