{"cve":"CVE-2023-34054","nvd":{"published":"2023-11-28T09:15:07.147","modified":"2026-09-04T18:59:12.370","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":[],"references":["https://spring.io/security/cve-2023-34054","https://spring.io/security/cve-2023-34054"],"products":["broadcom:reactor_netty"],"source":"nvd","synced_at":"2026-10-19T21:42:07.670898610+00:00"},"epss":{"cve":"CVE-2023-34054","score":0.00914,"percentile":0.60106,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-q24v-hpg3-v3jp","url":"https://osv.dev/vulnerability/GHSA-q24v-hpg3-v3jp","summary":"Reactor Netty HTTP Server denial of service vulnerability","modified":"2026-08-07T08:12:11.279858013Z","packages":[{"ecosystem":"Maven","name":"io.projectreactor.netty:reactor-netty-core","purl":"pkg:maven/io.projectreactor.netty/reactor-netty-core","ranges":[">=1.1.0 <1.1.13"],"fixed":["1.1.13"]},{"ecosystem":"Maven","name":"io.projectreactor.netty:reactor-netty-core","purl":"pkg:maven/io.projectreactor.netty/reactor-netty-core","ranges":[">=1.0.0 <1.0.39"],"fixed":["1.0.39"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}