{"cve":"CVE-2025-23020","nvd":{"published":"2025-02-20T03:15:12.630","modified":"2026-06-17T08:51:29.047","status":"Deferred","description":"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).","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:L","score":5.3},"cwes":["CWE-407"],"references":["https://github.com/ncc-pbottine/QUIC-Hash-Dos-Advisory","https://github.com/ptrd/kwik/releases/tag/v0.10.1"],"products":[],"source":"nvd","synced_at":"2026-10-19T21:59:18.731010617+00:00"},"epss":{"cve":"CVE-2025-23020","score":0.00579,"percentile":0.47652,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-9f57-9rhg-4hvm","url":"https://osv.dev/vulnerability/GHSA-9f57-9rhg-4hvm","summary":"Kwik hash collision vulnerability","modified":"2025-02-20T20:57:07.205105Z","packages":[{"ecosystem":"Maven","name":"tech.kwik:kwik","purl":"pkg:maven/tech.kwik/kwik","ranges":["<0.10.1"],"fixed":["0.10.1"]}]}],"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."]}