Medium
golang-github-lucas-clemente-quic-go — security advisory
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.
- Products
- golang-github-lucas-clemente-quic-go
- Affected versions
- 0.18.0-3, 0.24.0-1, 0.25.0-1, 0.37.4-1, 0.38.2-1, 0.50.0-1, 0.50.1-2, 0.59.0-2
- Fixed versions
- Not specified
- CVEs
- CVE-2025-64702
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 01:35 UTC · Revision 1
Source evidence
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.
osv:UBUNTU-CVE-2025-64702
golang-github-lucas-clemente-quic-go
Fixed versions: Not specified
golang-github-lucas-clemente-quic-go
Fixed versions: Not specified
golang-github-lucas-clemente-quic-go
Fixed versions: Not specified
golang-github-lucas-clemente-quic-go
Fixed versions: Not specified
golang-github-lucas-clemente-quic-go
Fixed versions: Not specified
Complete source record
{
"id": "905d11f2f3cd0ca95acca29afb67034d3a7c84a0586bea30e647205f394cbd2e",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2025-64702",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2025-64702",
"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 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.",
"evidence": "osv:UBUNTU-CVE-2025-64702",
"products": [
{
"name": {
"value": "golang-github-lucas-clemente-quic-go",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.18.0-3",
"evidence": "/affected/0/versions"
},
{
"value": "0.24.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.25.0-1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "golang-github-lucas-clemente-quic-go",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.37.4-1",
"evidence": "/affected/1/versions"
},
{
"value": "0.38.2-1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "golang-github-lucas-clemente-quic-go",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.50.0-1",
"evidence": "/affected/2/versions"
},
{
"value": "0.50.1-2",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "golang-github-lucas-clemente-quic-go",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.59.0-2",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "golang-github-lucas-clemente-quic-go",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.50.1-2",
"evidence": "/affected/4/versions"
},
{
"value": "0.59.0-2",
"evidence": "/affected/4/versions"
}
]
}
],
"severity": "medium",
"structured": {
"id": "UBUNTU-CVE-2025-64702",
"aliases": [
"UBUNTU-CVE-2025-64702"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "golang-github-lucas-clemente-quic-go",
"purl": "pkg:deb/ubuntu/golang-github-lucas-clemente-quic-go?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"0.18.0-3",
"0.24.0-1",
"0.25.0-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-64702.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "golang-github-lucas-clemente-quic-go-dev",
"binary_version": "0.25.0-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "golang-github-lucas-clemente-quic-go",
"purl": "pkg:deb/ubuntu/golang-github-lucas-clemente-quic-go?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"0.37.4-1",
"0.38.2-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-64702.json"
},
"ecosystem_specific": {
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{
"binary_name": "golang-github-lucas-clemente-quic-go-dev",
"binary_version": "0.38.2-1"
}
]
}
},
{
"ranges": [
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"package": {
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"purl": "pkg:deb/ubuntu/golang-github-lucas-clemente-quic-go?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"0.50.0-1",
"0.50.1-2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-64702.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "golang-github-lucas-clemente-quic-go-dev",
"binary_version": "0.50.1-2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
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],
"package": {
"name": "golang-github-lucas-clemente-quic-go",
"purl": "pkg:deb/ubuntu/golang-github-lucas-clemente-quic-go?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"0.59.0-2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-64702.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "golang-github-lucas-clemente-quic-go-dev",
"binary_version": "0.59.0-2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
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],
"package": {
"name": "golang-github-lucas-clemente-quic-go",
"purl": "pkg:deb/ubuntu/golang-github-lucas-clemente-quic-go?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"0.50.1-2",
"0.59.0-2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-64702.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "golang-github-lucas-clemente-quic-go-dev",
"binary_version": "0.59.0-2"
}
]
}
}
],
"modified": "2026-10-17T12:57:11.716457062Z",
"provider": "osv",
"upstream": [
"CVE-2025-64702"
],
"references": [
"https://ubuntu.com/security/CVE-2025-64702",
"https://www.cve.org/CVERecord?id=CVE-2025-64702",
"https://github.com/quic-go/quic-go/commit/5b2d2129f8315da41e01eff0a847ab38a34e83a8",
"https://github.com/quic-go/quic-go/security/advisories/GHSA-g754-hx8w-x2g6"
]
},
"related_cves": [
{
"value": "CVE-2025-64702",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 356874,
"published_at": "2025-12-11T21:15:00+00:00"
}