ubuntu-cve-2025-47911
Vulnerability from osv_ubuntu
Published
2026-02-05 18:16
Modified
2026-05-20 15:22
Summary
Details
The html.Parse function in golang.org/x/net/html has quadratic parsing complexity when processing certain inputs, which can lead to denial of service (DoS) if an attacker provides specially crafted HTML content.
Severity
5.3 (Medium)
5.3 (Medium)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "golang-go.net-dev",
"binary_version": "1:0.0+git20160110.4fd4a9f-1ubuntu0.1~esm2"
},
{
"binary_name": "golang-golang-x-net-dev",
"binary_version": "1:0.0+git20160110.4fd4a9f-1ubuntu0.1~esm2"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "golang-golang-x-net-dev",
"purl": "pkg:deb/ubuntu/golang-golang-x-net-dev@1:0.0+git20160110.4fd4a9f-1ubuntu0.1~esm2?arch=source\u0026distro=esm-infra/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1:0.0+git20160110.4fd4a9f-1ubuntu0.1~esm2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.0+git20150226.3d87fd6-3",
"0.0+git20151007.b846920+dfsg-1",
"1:0.0+git20150817.66f0418-1",
"1:0.0+git20160110.4fd4a9f-1",
"1:0.0+git20160110.4fd4a9f-1ubuntu0.1~esm1"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "juju",
"binary_version": "2.3.7-0ubuntu0.16.04.1+esm2"
},
{
"binary_name": "juju-2.0",
"binary_version": "2.3.7-0ubuntu0.16.04.1+esm2"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "juju-core",
"purl": "pkg:deb/ubuntu/juju-core@2.3.7-0ubuntu0.16.04.1+esm2?arch=source\u0026distro=esm-infra/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.3.7-0ubuntu0.16.04.1+esm2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1.24.6-0ubuntu3",
"1.25.0-0ubuntu1",
"1.25.0-0ubuntu2",
"1.25.0-0ubuntu3",
"2.0~beta4-0ubuntu2",
"2.0~beta6-0ubuntu1.16.04.1",
"2.0~beta7-0ubuntu1.16.04.1",
"2.0~beta12-0ubuntu1.16.04.1",
"2.0~beta15-0ubuntu2.16.04.1",
"2.0.0-0ubuntu0.16.04.2",
"2.0.2-0ubuntu0.16.04.1",
"2.0.2-0ubuntu0.16.04.2",
"2.3.1-0ubuntu0.16.04.1",
"2.3.2-0ubuntu0.16.04.1",
"2.3.7-0ubuntu0.16.04.1",
"2.3.7-0ubuntu0.16.04.1+esm1"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "golang-github-lxc-lxd-dev",
"binary_version": "2.0.11-0ubuntu1~16.04.4+esm2"
},
{
"binary_name": "lxc2",
"binary_version": "2.0.11-0ubuntu1~16.04.4+esm2"
},
{
"binary_name": "lxd",
"binary_version": "2.0.11-0ubuntu1~16.04.4+esm2"
},
{
"binary_name": "lxd-client",
"binary_version": "2.0.11-0ubuntu1~16.04.4+esm2"
},
{
"binary_name": "lxd-tools",
"binary_version": "2.0.11-0ubuntu1~16.04.4+esm2"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "lxd",
"purl": "pkg:deb/ubuntu/lxd@2.0.11-0ubuntu1~16.04.4+esm2?arch=source\u0026distro=esm-infra/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.0.11-0ubuntu1~16.04.4+esm2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.20-0ubuntu4",
"0.21-0ubuntu3",
"0.21-0ubuntu5",
"0.22-0ubuntu1",
"0.22-0ubuntu2",
"0.23-0ubuntu1",
"0.23-0ubuntu2",
"0.23-0ubuntu3",
"0.24-0ubuntu2",
"0.24-0ubuntu3",
"0.24-0ubuntu4",
"0.25-0ubuntu1",
"0.26-0ubuntu2",
"0.26-0ubuntu3",
"0.27-0ubuntu1",
"0.27-0ubuntu2",
"2.0.0~beta1-0ubuntu3",
"2.0.0~beta1-0ubuntu4",
"2.0.0~beta2-0ubuntu1",
"2.0.0~beta2-0ubuntu2",
"2.0.0~beta3-0ubuntu1",
"2.0.0~beta3-0ubuntu2",
"2.0.0~beta3-0ubuntu3",
"2.0.0~beta3-0ubuntu4",
"2.0.0~beta4-0ubuntu1",
"2.0.0~beta4-0ubuntu2",
"2.0.0~beta4-0ubuntu3",
"2.0.0~beta4-0ubuntu4",
"2.0.0~beta4-0ubuntu5",
"2.0.0~beta4-0ubuntu6",
"2.0.0~beta4-0ubuntu7",
"2.0.0~rc1-0ubuntu1",
"2.0.0~rc1-0ubuntu2",
"2.0.0~rc1-0ubuntu3",
"2.0.0~rc2-0ubuntu2",
"2.0.0~rc2-0ubuntu3",
"2.0.0~rc3-0ubuntu1",
"2.0.0~rc3-0ubuntu2",
"2.0.0~rc3-0ubuntu3",
"2.0.0~rc3-0ubuntu4",
"2.0.0~rc4-0ubuntu1",
"2.0.0~rc5-0ubuntu1",
"2.0.0~rc6-0ubuntu1",
"2.0.0~rc6-0ubuntu2",
"2.0.0~rc7-0ubuntu1",
"2.0.0~rc7-0ubuntu2",
"2.0.0~rc8-0ubuntu1",
"2.0.0~rc8-0ubuntu2",
"2.0.0~rc8-0ubuntu3",
"2.0.0~rc8-0ubuntu5",
"2.0.0~rc8-0ubuntu6",
"2.0.0~rc8-0ubuntu7",
"2.0.0~rc9-0ubuntu2",
"2.0.0~rc9-0ubuntu3",
"2.0.0~rc9-0ubuntu4",
"2.0.0~rc9-0ubuntu5",
"2.0.0-0ubuntu1",
"2.0.0-0ubuntu2",
"2.0.0-0ubuntu3",
"2.0.0-0ubuntu4",
"2.0.1-0ubuntu1~16.04.1",
"2.0.2-0ubuntu1~16.04.1",
"2.0.3-0ubuntu1~ubuntu16.04.2",
"2.0.4-0ubuntu1~ubuntu16.04.1",
"2.0.5-0ubuntu1~ubuntu16.04.1",
"2.0.8-0ubuntu1~ubuntu16.04.1",
"2.0.8-0ubuntu1~ubuntu16.04.2",
"2.0.9-0ubuntu1~16.04.1",
"2.0.9-0ubuntu1~16.04.2",
"2.0.10-0ubuntu1~16.04.1",
"2.0.10-0ubuntu1~16.04.2",
"2.0.11-0ubuntu1~16.04.2",
"2.0.11-0ubuntu1~16.04.4",
"2.0.11-0ubuntu1~16.04.4+esm1"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "lxd",
"binary_version": "3.0.3-0ubuntu1~18.04.2+esm2"
},
{
"binary_name": "lxd-client",
"binary_version": "3.0.3-0ubuntu1~18.04.2+esm2"
},
{
"binary_name": "lxd-tools",
"binary_version": "3.0.3-0ubuntu1~18.04.2+esm2"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "lxd",
"purl": "pkg:deb/ubuntu/lxd@3.0.3-0ubuntu1~18.04.2+esm2?arch=source\u0026distro=esm-infra/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.0.3-0ubuntu1~18.04.2+esm2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.18-0ubuntu6",
"2.19-0ubuntu1",
"2.20-0ubuntu3",
"2.20-0ubuntu4",
"2.21-0ubuntu1",
"2.21-0ubuntu2",
"2.21-0ubuntu3",
"2.21-0ubuntu4",
"3.0.0~beta2-0ubuntu3",
"3.0.0~beta3-0ubuntu3",
"3.0.0~beta5-0ubuntu2",
"3.0.0~beta7-0ubuntu1",
"3.0.0-0ubuntu1",
"3.0.0-0ubuntu2",
"3.0.0-0ubuntu3",
"3.0.0-0ubuntu4",
"3.0.1-0ubuntu1~18.04.1",
"3.0.2-0ubuntu1~18.04.1",
"3.0.3-0ubuntu1~18.04.1",
"3.0.3-0ubuntu1~18.04.2",
"3.0.3-0ubuntu1~18.04.2+esm1"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "golang-go.net-dev",
"binary_version": "1:0.0+git20170629.c81e7f2+dfsg-2ubuntu0.1~esm2"
},
{
"binary_name": "golang-golang-x-net-dev",
"binary_version": "1:0.0+git20170629.c81e7f2+dfsg-2ubuntu0.1~esm2"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "golang-golang-x-net-dev",
"purl": "pkg:deb/ubuntu/golang-golang-x-net-dev@1:0.0+git20170629.c81e7f2+dfsg-2ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1:0.0+git20170629.c81e7f2+dfsg-2ubuntu0.1~esm2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:0.0+git20170629.c81e7f2+dfsg-1ubuntu1",
"1:0.0+git20170629.c81e7f2+dfsg-1ubuntu2",
"1:0.0+git20170629.c81e7f2+dfsg-2",
"1:0.0+git20170629.c81e7f2+dfsg-2ubuntu0.1~esm1"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "golang-go.net-dev",
"binary_version": "1:0.0+git20190811.74dc4d7+dfsg-1ubuntu0.1~esm2"
},
{
"binary_name": "golang-golang-x-net-dev",
"binary_version": "1:0.0+git20190811.74dc4d7+dfsg-1ubuntu0.1~esm2"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "golang-golang-x-net-dev",
"purl": "pkg:deb/ubuntu/golang-golang-x-net-dev@1:0.0+git20190811.74dc4d7+dfsg-1ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1:0.0+git20190811.74dc4d7+dfsg-1ubuntu0.1~esm2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:0.0+git20190811.74dc4d7+dfsg-1",
"1:0.0+git20190811.74dc4d7+dfsg-1ubuntu0.1~esm1"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "golang-golang-x-net-dev",
"binary_version": "1:0.0+git20211209.491a49a+dfsg-1ubuntu0.1~esm2"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:22.04:LTS",
"name": "golang-golang-x-net",
"purl": "pkg:deb/ubuntu/golang-golang-x-net@1:0.0+git20211209.491a49a+dfsg-1ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/jammy"
},
"ranges": [
{
"events": [
{
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},
{
"fixed": "1:0.0+git20211209.491a49a+dfsg-1ubuntu0.1~esm2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:0.0+git20210119.5f4716e+dfsg-4",
"1:0.0+git20210805.aaa1db6+dfsg-1",
"1:0.0+git20211209.491a49a+dfsg-1",
"1:0.0+git20211209.491a49a+dfsg-1ubuntu0.1~esm1"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "golang-golang-x-net-dev",
"binary_version": "1:0.21.0+dfsg-1ubuntu0.1~esm2"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:24.04:LTS",
"name": "golang-golang-x-net",
"purl": "pkg:deb/ubuntu/golang-golang-x-net@1:0.21.0+dfsg-1ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/noble"
},
"ranges": [
{
"events": [
{
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},
{
"fixed": "1:0.21.0+dfsg-1ubuntu0.1~esm2"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:0.10.0-1",
"1:0.17.0+dfsg-1",
"1:0.20.0+dfsg-1",
"1:0.21.0+dfsg-1",
"1:0.21.0+dfsg-1ubuntu0.1~esm1"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "golang-golang-x-net-dev",
"binary_version": "1:0.27.0-2"
}
]
},
"package": {
"ecosystem": "Ubuntu:25.10",
"name": "golang-golang-x-net",
"purl": "pkg:deb/ubuntu/golang-golang-x-net@1:0.27.0-2?arch=source\u0026distro=questing"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:0.27.0-1",
"1:0.27.0-2"
]
},
{
"ecosystem_specific": {
"binaries": [
{
"binary_name": "golang-golang-x-net-dev",
"binary_version": "1:0.27.0-2"
}
]
},
"package": {
"ecosystem": "Ubuntu:26.04:LTS",
"name": "golang-golang-x-net",
"purl": "pkg:deb/ubuntu/golang-golang-x-net@1:0.27.0-2?arch=source\u0026distro=resolute"
},
"ranges": [
{
"events": [
{
"introduced": "0"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:0.27.0-2"
]
}
],
"aliases": [],
"details": "The html.Parse function in golang.org/x/net/html has quadratic parsing complexity when processing certain inputs, which can lead to denial of service (DoS) if an attacker provides specially crafted HTML content.",
"id": "UBUNTU-CVE-2025-47911",
"modified": "2026-05-20T15:22:53Z",
"published": "2026-02-05T18:16:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2025-47911"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-47911"
},
{
"type": "REPORT",
"url": "https://groups.google.com/g/golang-announce/c/jnQcOYpiR2c"
},
{
"type": "REPORT",
"url": "https://github.com/golang/go/issues/75682"
},
{
"type": "REPORT",
"url": "https://github.com/golang/vulndb/issues/4440"
},
{
"type": "REPORT",
"url": "https://go.dev/cl/709876"
},
{
"type": "REPORT",
"url": "https://pkg.go.dev/vuln/GO-2026-4440"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-8089-1"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-8089-2"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-8089-3"
}
],
"related": [
"USN-8089-1",
"USN-8089-2",
"USN-8089-3"
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2025-47911"
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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