{"id":"CVE-2025-23020","aliases":["GHSA-9f57-9rhg-4hvm"],"url":"https://o3.security/vulnerability/CVE-2025-23020","summary":"Kwik hash collision vulnerability","details":"An issue was discovered in Kwik before 0.10.1. A hash collision vulnerability (in the hash table used to manage connections) allows remote attackers to cause a considerable CPU load on the server (a Hash DoS attack) by initiating connections with colliding Source Connection IDs (SCIDs).","published":"2025-02-20T00:00:00Z","modified":"2026-08-12T03:51:19.710087114Z","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":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"tech.kwik:kwik","fixedVersion":"0.10.1"}],"fix":{"url":"https://github.com/ptrd/kwik/commit/b0733d72bad76bc5d8df2f4a7792ebb2539ebdc8","label":"ptrd/kwik@b0733d7"},"references":[{"type":"WEB","url":"https://github.com/ptrd/kwik/releases/tag/v0.10.1"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/23xxx/CVE-2025-23020.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-23020"},{"type":"PACKAGE","url":"https://github.com/ncc-pbottine/QUIC-Hash-Dos-Advisory"},{"type":"WEB","url":"https://github.com/ptrd/kwik/commit/b0733d72bad76bc5d8df2f4a7792ebb2539ebdc8"},{"type":"PACKAGE","url":"https://github.com/ptrd/kwik"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:19.710087114Z"}}