{"id":"CVE-2023-34054","aliases":["CLSA-2026-1767744512","CLSA-2026-1768435721","CLSA-2026-1793345120","EUVD-2023-3013","GHSA-q24v-hpg3-v3jp","ROOT-APP-MAVEN-CVE-2023-34054"],"status":"published","title":"Reactor Netty HTTP Server Metrics DoS Vulnerability","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, it is possible for a user to provide specially crafted HTTP requests that may cause a denial-of-service (DoS) condition.\n\nSpecifically, an application is vulnerable if Reactor Netty HTTP Server built-in integration with Micrometer is enabled.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00914,"percentile":0.60407,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"published":"2023-11-28T08:16:14Z","modified":"2026-11-02T19:45:14Z","fixes":[{"ecosystem":"Maven","package":"io.projectreactor.netty:reactor-netty-core","fixed_in":["1.1.13","1.0.39"],"sources":["ghsa","osv"]},{"ecosystem":"Root:Maven","package":"io.root.io.projectreactor.netty:reactor-netty-core","fixed_in":["1.1.10-root.io.1","1.1.10-root.io.3","1.1.10-root.io.4","1.1.10-root.io.5"],"sources":["osv"]},{"ecosystem":"Root:Maven","package":"io.projectreactor.netty:reactor-netty-core","fixed_in":["1.1.10-aikido.5"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"io.projectreactor.netty:reactor-netty-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"1.1.0"},{"fixed":"1.1.13"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"io.projectreactor.netty:reactor-netty-core","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","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":"Maven","package":"io.projectreactor.netty:reactor-netty-core","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-core","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","1.0.8","1.0.9"]},{"source":"osv","ecosystem":"Root:Maven","package":"io.root.io.projectreactor.netty:reactor-netty-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.10-root.io.1"},{"fixed":"1.1.10-root.io.3"},{"fixed":"1.1.10-root.io.4"},{"fixed":"1.1.10-root.io.5"}]}]},{"source":"osv","ecosystem":"Root:Maven","package":"io.projectreactor.netty:reactor-netty-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.1.10-aikido.5"}]}]}],"products":[{"vendor":"broadcom","product":"reactor_netty"},{"vendor":"spring","product":"reactor netty"},{"vendor":"vmware","product":"reactor netty"}],"references":[{"url":"https://spring.io/security/cve-2023-34054","tags":["x_transferred","Vendor Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-34054","tags":["advisory"]},{"url":"https://github.com/reactor/reactor-netty/releases/tag/v1.0.39","tags":["web"]},{"url":"https://github.com/reactor/reactor-netty/releases/tag/v1.1.13","tags":["web"]},{"url":"https://github.com/reactor/reactor-netty/commit/37dc8a2ef6514cd7834e75e7f3faf0b9ea044c88","tags":["web"]},{"url":"https://github.com/reactor/reactor-netty/commit/4ddbb1b9b985bb72290110ebae468a54e7f19420","tags":["web"]},{"url":"https://github.com/reactor/reactor-netty/commit/ae82154e99e6f51f4816effd135f0c3a966d6ea3","tags":["web"]},{"url":"https://github.com/advisories/GHSA-q24v-hpg3-v3jp"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/34xxx/CVE-2023-34054.json","tags":["advisory"]},{"url":"https://github.com/reactor/reactor-netty","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2023-34054","title":"Reactor Netty HTTP Server Metrics DoS Vulnerability","description":"\nIn Reactor Netty HTTP Server, versions 1.1.x prior to 1.1.13 and versions 1.0.x prior to 1.0.39, it is possible for a user to provide specially crafted HTTP requests that may cause a denial-of-service (DoS) condition.\n\nSpecifically, an application is vulnerable if Reactor Netty HTTP Server built-in integration with Micrometer is enabled.\n\n\n\n\n","status":"published","published":"2023-11-28T08:16:14.361Z","modified":"2024-08-02T16:01:52.415Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"updated_at":"2026-11-02T14:35:35.912488Z"}],"euvd":[{"id":"EUVD-2023-3013","description":"\nIn Reactor Netty HTTP Server, versions 1.1.x prior to 1.1.13 and versions 1.0.x prior to 1.0.39, it is possible for a user to provide specially crafted HTTP requests that may cause a denial-of-service (DoS) condition.\n\nSpecifically, an application is vulnerable if Reactor Netty HTTP Server built-in integration with Micrometer is enabled.\n\n\n\n\n","status":"published","published":"2023-11-28T08:16:14Z","modified":"2024-08-02T16:01:52Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-03T03:50:04.380287Z"}],"ghsa":[{"id":"GHSA-q24v-hpg3-v3jp","title":"Reactor Netty HTTP Server denial of service vulnerability","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, it is possible for a user to provide specially crafted HTTP requests that may cause a denial-of-service (DoS) condition.\n\nSpecifically, an application is vulnerable if Reactor Netty HTTP Server built-in integration with Micrometer is enabled.","status":"published","published":"2023-11-28T09:30:27Z","modified":"2024-06-28T12:49:35Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T14:37:55.455438Z"}],"nvd":[{"id":"CVE-2023-34054","description":"\nIn Reactor Netty HTTP Server, versions 1.1.x prior to 1.1.13 and versions 1.0.x prior to 1.0.39, it is possible for a user to provide specially crafted HTTP requests that may cause a denial-of-service (DoS) condition.\n\nSpecifically, an application is vulnerable if Reactor Netty HTTP Server built-in integration with Micrometer is enabled.\n\n\n\n\n","status":"published","published":"2023-11-28T09:15:07.147Z","modified":"2026-09-04T18:59:12.37Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:08:49.393375Z"}],"osv":[{"id":"CVE-2023-34054","title":"Reactor Netty HTTP Server Metrics DoS Vulnerability","description":"\nIn Reactor Netty HTTP Server, versions 1.1.x prior to 1.1.13 and versions 1.0.x prior to 1.0.39, it is possible for a user to provide specially crafted HTTP requests that may cause a denial-of-service (DoS) condition.\n\nSpecifically, an application is vulnerable if Reactor Netty HTTP Server built-in integration with Micrometer is enabled.\n\n\n\n\n","status":"published","published":"2023-11-28T08:16:14.361Z","modified":"2026-10-28T02:30:58.063952278Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T15:44:32.116263Z"},{"id":"GHSA-q24v-hpg3-v3jp","title":"Reactor Netty HTTP Server denial of service vulnerability","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, it is possible for a user to provide specially crafted HTTP requests that may cause a denial-of-service (DoS) condition.\n\nSpecifically, an application is vulnerable if Reactor Netty HTTP Server built-in integration with Micrometer is 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