{"id":"CVE-2023-34054","aliases":["GHSA-q24v-hpg3-v3jp"],"url":"https://o3.security/vulnerability/CVE-2023-34054","summary":"Reactor Netty HTTP Server Metrics DoS Vulnerability","details":"\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","published":"2023-11-28T08:16:14.361Z","modified":"2026-09-06T11:45:19.997979151Z","cvss":{"score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},"epss":{"score":0.00914,"percentile":0.58198,"asOf":"2026-09-15"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"io.projectreactor.netty:reactor-netty-core","fixedVersion":"1.1.13"},{"ecosystem":"Maven","name":"io.projectreactor.netty:reactor-netty-core","fixedVersion":"1.0.39"}],"fix":{"url":"https://github.com/reactor/reactor-netty/commit/37dc8a2ef6514cd7834e75e7f3faf0b9ea044c88","label":"reactor/reactor-netty@37dc8a2"},"references":[{"type":"WEB","url":"https://spring.io/security/cve-2023-34054"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/34xxx/CVE-2023-34054.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-34054"},{"type":"WEB","url":"https://github.com/reactor/reactor-netty/commit/37dc8a2ef6514cd7834e75e7f3faf0b9ea044c88"},{"type":"WEB","url":"https://github.com/reactor/reactor-netty/commit/4ddbb1b9b985bb72290110ebae468a54e7f19420"},{"type":"WEB","url":"https://github.com/reactor/reactor-netty/commit/ae82154e99e6f51f4816effd135f0c3a966d6ea3"},{"type":"PACKAGE","url":"https://github.com/reactor/reactor-netty"},{"type":"WEB","url":"https://github.com/reactor/reactor-netty/releases/tag/v1.0.39"},{"type":"WEB","url":"https://github.com/reactor/reactor-netty/releases/tag/v1.1.13"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-06T11:45:19.997979151Z"}}