{"cve":"CVE-2023-46239","nvd":{"published":"2023-10-31T16:15:09.543","modified":"2026-06-17T06:30:29.663","status":"Modified","description":"quic-go is an implementation of the QUIC protocol in Go. Starting in version 0.37.0 and prior to version 0.37.3, by serializing an ACK frame after the CRYTPO that allows a node to complete the handshake, a remote node could trigger a nil pointer dereference (leading to a panic) when the node attempted to drop the Handshake packet number space. An attacker can bring down a quic-go node with very minimal effort. Completing the QUIC handshake only requires sending and receiving a few packets. Version 0.37.3 contains a patch. Versions before 0.37.0 are not affected.","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":["CWE-476","CWE-248"],"references":["https://github.com/quic-go/quic-go/commit/b6a4725b60f1fe04e8f1ddcc3114e290fcea1617","https://github.com/quic-go/quic-go/releases/tag/v0.37.3","https://github.com/quic-go/quic-go/security/advisories/GHSA-3q6m-v84f-6p9h","https://github.com/quic-go/quic-go/commit/b6a4725b60f1fe04e8f1ddcc3114e290fcea1617","https://github.com/quic-go/quic-go/releases/tag/v0.37.3"],"products":["quic-go_project:quic-go"],"source":"nvd","synced_at":"2026-10-19T21:40:11.519948003+00:00"},"epss":{"cve":"CVE-2023-46239","score":0.00943,"percentile":0.6105,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-3q6m-v84f-6p9h","url":"https://osv.dev/vulnerability/GHSA-3q6m-v84f-6p9h","summary":"quic-go vulnerable to pointer dereference that can lead to panic","modified":"2026-09-10T03:49:24.666665738Z","packages":[{"ecosystem":"Go","name":"github.com/quic-go/quic-go","purl":"pkg:golang/github.com/quic-go/quic-go","ranges":[">=0.37.0 <0.37.3"],"fixed":["0.37.3"]}]},{"id":"GO-2023-2160","url":"https://osv.dev/vulnerability/GO-2023-2160","summary":"Panic during QUIC handshake in github.com/quic-go/quic-go","modified":"2024-05-20T16:03:47Z","packages":[{"ecosystem":"Go","name":"github.com/quic-go/quic-go","purl":"pkg:golang/github.com/quic-go/quic-go","ranges":[">=0.37.0 <0.37.3"],"fixed":["0.37.3"]}]}],"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."]}