{"id":"CVE-2025-64702","title":"quic-go is an implementation of the QUIC protocol in Go","summary":"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 dec…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","cwe":["CWE-770"],"vendor":"quic-go_project","product":"quic-go","affected":["quic-go < 0.57.0"],"patched":["quic-go 0.57.0"],"published":"2025-12-11","updated":"2026-10-14","sourceUpdated":"2026-10-14T20:10:00.190","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-64702","references":[{"url":"https://github.com/quic-go/quic-go/commit/5b2d2129f8315da41e01eff0a847ab38a34e83a8","label":"security-advisories@github.com"},{"url":"https://github.com/quic-go/quic-go/security/advisories/GHSA-g754-hx8w-x2g6","label":"security-advisories@github.com"}],"tags":["nvd"],"epss":0.00364,"epssPercentile":0.28547,"ingestedAt":"2026-10-14T20:53:12.285Z","slug":"CVE-2025-64702","body":"## Overview\n\nquic-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.\n\n## Affected\n\n- `quic-go < 0.57.0`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `quic-go 0.57.0`","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}