quic-go HTTP/3 QPACK Header Expansion DoS_CVE-2025-64702

5.3 / 10

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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.

Basic Information

ID CVE-2025-64702

Source GitHub_M

Published Dec 11, 2025 at 20:58

Affected Product

Vendor quic-go

Product quic-go

Version < 0.57.0

Affected Versions quic-go quic-go < 0.57.0

CWE Classification

CWE-770

References

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    "published": "2025-12-11T20:58:10.517Z",
    "modified": "2025-12-11T20:58:10.517Z",
    "type": "cve",
    "title": "quic-go HTTP/3 QPACK Header Expansion DoS",
    "source": "GitHub_M",
    "references": "https://github.com/quic-go/quic-go/security/advisories/GHSA-g754-hx8w-x2g6\nhttps://github.com/quic-go/quic-go/commit/5b2d2129f8315da41e01eff0a847ab38a34e83a8",
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