{"cve":"CVE-2023-49295","nvd":{"published":"2024-01-10T22:15:50.610","modified":"2026-06-17T06:35:47.473","status":"Modified","description":"quic-go is an implementation of the QUIC protocol (RFC 9000, RFC 9001, RFC 9002) in Go. An attacker can cause its peer to run out of memory sending a large number of PATH_CHALLENGE frames. The receiver is supposed to respond to each PATH_CHALLENGE frame with a PATH_RESPONSE frame. The attacker can prevent the receiver from sending out (the vast majority of) these PATH_RESPONSE frames by collapsing the peers congestion window (by selectively acknowledging received packets) and by manipulating the peer's RTT estimate. This vulnerability has been patched in versions 0.37.7, 0.38.2 and 0.39.4.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":6.5},"cwes":["CWE-400"],"references":["https://github.com/quic-go/quic-go/commit/17fc98c2d81dbe685c19702dc694a9d606ac56dc","https://github.com/quic-go/quic-go/commit/21609ddfeff93668c7625a85eb09f1541fdad965","https://github.com/quic-go/quic-go/commit/3a9c18bcd27a01c551ac9bf8bd2b4bded77c189a","https://github.com/quic-go/quic-go/commit/554d543b50b917369fb1394cc5396d928166cf49","https://github.com/quic-go/quic-go/commit/6cc3d58935426191296171a6c0d1ee965e10534e"],"products":["quic-go_project:quic-go"],"source":"nvd","synced_at":"2026-10-19T21:43:38.875533635+00:00"},"epss":{"cve":"CVE-2023-49295","score":0.01204,"percentile":0.68269,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-ppxx-5m9h-6vxf","url":"https://osv.dev/vulnerability/GHSA-ppxx-5m9h-6vxf","summary":"quic-go's path validation mechanism can be exploited to cause denial of service","modified":"2026-09-10T03:50:05.041507396Z","packages":[{"ecosystem":"Go","name":"github.com/quic-go/quic-go","purl":"pkg:golang/github.com/quic-go/quic-go","ranges":[">=0.40.0 <0.40.1"],"fixed":["0.40.1"]},{"ecosystem":"Go","name":"github.com/quic-go/quic-go","purl":"pkg:golang/github.com/quic-go/quic-go","ranges":[">=0.39.0 <0.39.4"],"fixed":["0.39.4"]},{"ecosystem":"Go","name":"github.com/quic-go/quic-go","purl":"pkg:golang/github.com/quic-go/quic-go","ranges":[">=0.38.0 <0.38.2"],"fixed":["0.38.2"]},{"ecosystem":"Go","name":"github.com/quic-go/quic-go","purl":"pkg:golang/github.com/quic-go/quic-go","ranges":["<0.37.7"],"fixed":["0.37.7"]}]},{"id":"GO-2024-2459","url":"https://osv.dev/vulnerability/GO-2024-2459","summary":"Denial of service via path validation in github.com/quic-go/quic-go","modified":"2026-02-04T02:21:26.555844Z","packages":[{"ecosystem":"Go","name":"github.com/quic-go/quic-go","purl":"pkg:golang/github.com/quic-go/quic-go","ranges":["<0.37.7",">=0.38.0 <0.38.2",">=0.39.0 <0.39.4",">=0.40.0 <0.40.1"],"fixed":["0.37.7","0.38.2","0.39.4","0.40.1"]}]}],"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."]}