{"cve":"CVE-2025-64702","nvd":{"published":"2025-12-11T21:15:54.707","modified":"2026-10-14T20:10:00.190","status":"Analyzed","description":"quic-go is an implementation of the QUIC protocol in Go. Versions 0.56.0 and below are vulnerable to excessive memory allocation through quic-go's HTTP/3 client and server implementations by sending a QPACK-encoded HEADERS frame that decodes into a large header field section (many unique header names and/or large values). The implementation builds an http.Header (used on the http.Request and http.Response, respectively), while only enforcing limits on the size of the (QPACK-compressed) HEADERS frame, but not on the decoded header, leading to memory exhaustion. This issue is fixed in version 0.57.0.","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-770"],"references":["https://github.com/quic-go/quic-go/commit/5b2d2129f8315da41e01eff0a847ab38a34e83a8","https://github.com/quic-go/quic-go/security/advisories/GHSA-g754-hx8w-x2g6"],"products":["quic-go_project:quic-go"],"source":"nvd","synced_at":"2026-10-19T22:16:40.427100871+00:00"},"epss":{"cve":"CVE-2025-64702","score":0.00917,"percentile":0.59947,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-g754-hx8w-x2g6","url":"https://osv.dev/vulnerability/GHSA-g754-hx8w-x2g6","summary":"quic-go HTTP/3 QPACK Header Expansion DoS","modified":"2026-09-10T03:50:31.947832636Z","packages":[{"ecosystem":"Go","name":"github.com/quic-go/quic-go","purl":"pkg:golang/github.com/quic-go/quic-go","ranges":["<0.57.0"],"fixed":["0.57.0"]}]},{"id":"GO-2025-4233","url":"https://osv.dev/vulnerability/GO-2025-4233","summary":"HTTP/3 QPACK Header Expansion DoS in github.com/quic-go/quic-go","modified":"2026-02-04T03:42:03.713204Z","packages":[{"ecosystem":"Go","name":"github.com/quic-go/quic-go","purl":"pkg:golang/github.com/quic-go/quic-go","ranges":["<0.57.0"],"fixed":["0.57.0"]}]}],"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."]}