Medium
netsurf — security advisory
NetSurf 3.11 is vulnerable to Use After Free in dom_node_set_text_content function.
- Products
- netsurf
- Affected versions
- 3.10-1, 3.10-1build1, 3.10-3.1, 3.11-1, 3.11-1build4, 3.11-1build5, 3.11-2, 3.11-3, 3.11-4, 3.11-4ubuntu1, 3.2+dfsg-2.2build1, 3.6-3.2
- Fixed versions
- Not specified
- CVEs
- CVE-2025-29699
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 01:26 UTC · Revision 1
Source evidence
NetSurf 3.11 is vulnerable to Use After Free in dom_node_set_text_content function.
osv:UBUNTU-CVE-2025-29699
netsurf
Fixed versions: Not specified
netsurf
Fixed versions: Not specified
netsurf
Fixed versions: Not specified
netsurf
Fixed versions: Not specified
netsurf
Fixed versions: Not specified
netsurf
Fixed versions: Not specified
netsurf
Fixed versions: Not specified
Complete source record
{
"id": "89d1de47cb75e2a20f3180dc22134406fb97f473884f7d0c388f024456f6d32a",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2025-29699",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2025-29699",
"summary": "NetSurf 3.11 is vulnerable to Use After Free in dom_node_set_text_content function.",
"evidence": "osv:UBUNTU-CVE-2025-29699",
"products": [
{
"name": {
"value": "netsurf",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.2+dfsg-2.2build1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "netsurf",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.6-3.2",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "netsurf",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.10-1",
"evidence": "/affected/2/versions"
},
{
"value": "3.10-1build1",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "netsurf",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.10-3.1",
"evidence": "/affected/3/versions"
},
{
"value": "3.11-1",
"evidence": "/affected/3/versions"
},
{
"value": "3.11-1build4",
"evidence": "/affected/3/versions"
},
{
"value": "3.11-1build5",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "netsurf",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.11-2",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "netsurf",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.11-3",
"evidence": "/affected/5/versions"
},
{
"value": "3.11-4",
"evidence": "/affected/5/versions"
},
{
"value": "3.11-4ubuntu1",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "netsurf",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.11-2",
"evidence": "/affected/6/versions"
},
{
"value": "3.11-3",
"evidence": "/affected/6/versions"
}
]
}
],
"severity": "medium",
"structured": {
"id": "UBUNTU-CVE-2025-29699",
"aliases": [
"UBUNTU-CVE-2025-29699"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "netsurf",
"purl": "pkg:deb/ubuntu/netsurf?arch=source&distro=xenial",
"ecosystem": "Ubuntu:16.04:LTS"
},
"versions": [
"3.2+dfsg-2.2build1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-29699.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "netsurf",
"binary_version": "3.2+dfsg-2.2build1"
},
{
"binary_name": "netsurf-common",
"binary_version": "3.2+dfsg-2.2build1"
},
{
"binary_name": "netsurf-fb",
"binary_version": "3.2+dfsg-2.2build1"
},
{
"binary_name": "netsurf-gtk",
"binary_version": "3.2+dfsg-2.2build1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "netsurf",
"purl": "pkg:deb/ubuntu/netsurf?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
},
"versions": [
"3.6-3.2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-29699.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "netsurf",
"binary_version": "3.6-3.2"
},
{
"binary_name": "netsurf-common",
"binary_version": "3.6-3.2"
},
{
"binary_name": "netsurf-fb",
"binary_version": "3.6-3.2"
},
{
"binary_name": "netsurf-gtk",
"binary_version": "3.6-3.2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "netsurf",
"purl": "pkg:deb/ubuntu/netsurf?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"3.10-1",
"3.10-1build1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-29699.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "netsurf-common",
"binary_version": "3.10-1build1"
},
{
"binary_name": "netsurf-fb",
"binary_version": "3.10-1build1"
},
{
"binary_name": "netsurf-gtk",
"binary_version": "3.10-1build1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "netsurf",
"purl": "pkg:deb/ubuntu/netsurf?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"3.10-3.1",
"3.11-1",
"3.11-1build4",
"3.11-1build5"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-29699.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "netsurf-common",
"binary_version": "3.11-1build5"
},
{
"binary_name": "netsurf-fb",
"binary_version": "3.11-1build5"
},
{
"binary_name": "netsurf-gtk",
"binary_version": "3.11-1build5"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "netsurf",
"purl": "pkg:deb/ubuntu/netsurf?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"3.11-2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-29699.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "netsurf-common",
"binary_version": "3.11-2"
},
{
"binary_name": "netsurf-fb",
"binary_version": "3.11-2"
},
{
"binary_name": "netsurf-gtk",
"binary_version": "3.11-2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "netsurf",
"purl": "pkg:deb/ubuntu/netsurf?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"3.11-3",
"3.11-4",
"3.11-4ubuntu1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-29699.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "netsurf-common",
"binary_version": "3.11-4ubuntu1"
},
{
"binary_name": "netsurf-fb",
"binary_version": "3.11-4ubuntu1"
},
{
"binary_name": "netsurf-gtk",
"binary_version": "3.11-4ubuntu1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "netsurf",
"purl": "pkg:deb/ubuntu/netsurf?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"3.11-2",
"3.11-3"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-29699.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "netsurf-common",
"binary_version": "3.11-3"
},
{
"binary_name": "netsurf-fb",
"binary_version": "3.11-3"
},
{
"binary_name": "netsurf-gtk",
"binary_version": "3.11-3"
}
]
}
}
],
"modified": "2026-10-17T12:56:49.636241792Z",
"provider": "osv",
"upstream": [
"CVE-2025-29699"
],
"references": [
"https://ubuntu.com/security/CVE-2025-29699",
"https://www.cve.org/CVERecord?id=CVE-2025-29699",
"https://github.com/Fysac/netsurf-disclosure/tree/main/CVE-2025-29699"
]
},
"related_cves": [
{
"value": "CVE-2025-29699",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 356406,
"published_at": "2025-11-03T15:15:00+00:00"
}