High
freecad — security advisory
FreeCAD is a free and open-source multiplatform 3D parametric modeler. Prior to 1.1.2, the FEM Displacement Constraint task dialog in src/Mod/Fem/Gui/TaskFemConstraintDisplacement.cpp passes the xDisplacementFormula, yDisplacementFormula, and zDisplacementFormula fields of a Fem::ConstraintDisplacement object through TaskDlgFemConstraintDisplacement::accept() into Gui::Command::doCommand. The escaping helper neutralizes quotation marks but not backslashes, allowing crafted formula text to terminate the generated Python string and execute arbitrary Python code with the FreeCAD process's privileges when a victim accepts the dialog. This issue is fixed in version 1.1.2.
- Products
- freecad
- Affected versions
- 0.14.3702+dfsg-4, 0.15.4671+dfsg1-1, 0.15.4671+dfsg1-2, 0.15.4671+dfsg1-3, 0.15.4671+dfsg1-4, 0.16+dfsg2-3, 0.16+dfsg2-3build3, 0.16.6712+dfsg1-1, 0.16.6712+dfsg1-1ubuntu1, 0.16.6712+dfsg1-1ubuntu2, 0.18.3+dfsg1-1, 0.18.3+dfsg1-4, 0.18.4+dfsg1-1, 0.18.4+dfsg1-2, 0.18.4+dfsg1-2ubuntu8, 0.18.4+dfsg1-2~build1, 0.18.4+dfsg2-1ubuntu1, 0.18.4+dfsg2-1ubuntu2, 0.18.4+dfsg2-1ubuntu4, 0.19.1+dfsg1-2, 0.19.2+dfsg1-3, 0.19.2+dfsg1-3ubuntu1, 1.1.1+dfsg-3, 1.1.1+dfsg-3build1, 1.1.3+dfsg-3build1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-73233
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 03:15 UTC · Revision 1
Source evidence
FreeCAD is a free and open-source multiplatform 3D parametric modeler. Prior to 1.1.2, the FEM Displacement Constraint task dialog in src/Mod/Fem/Gui/TaskFemConstraintDisplacement.cpp passes the xDisplacementFormula, yDisplacementFormula, and zDisplacementFormula fields of a Fem::ConstraintDisplacement object through TaskDlgFemConstraintDisplacement::accept() into Gui::Command::doCommand. The escaping helper neutralizes quotation marks but not backslashes, allowing crafted formula text to terminate the generated Python string and execute arbitrary Python code with the FreeCAD process's privileges when a victim accepts the dialog. This issue is fixed in version 1.1.2.
osv:UBUNTU-CVE-2026-73233
freecad
Fixed versions: Not specified
freecad
Fixed versions: Not specified
freecad
Fixed versions: Not specified
freecad
Fixed versions: Not specified
freecad
Fixed versions: Not specified
Complete source record
{
"id": "d752e90fff305e3f40e85b8df2c59a2928b776ecc6018df4d71da64f1730da07",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-73233",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2026-73233",
"summary": "FreeCAD is a free and open-source multiplatform 3D parametric modeler. Prior to 1.1.2, the FEM Displacement Constraint task dialog in src/Mod/Fem/Gui/TaskFemConstraintDisplacement.cpp passes the xDisplacementFormula, yDisplacementFormula, and zDisplacementFormula fields of a Fem::ConstraintDisplacement object through TaskDlgFemConstraintDisplacement::accept() into Gui::Command::doCommand. The escaping helper neutralizes quotation marks but not backslashes, allowing crafted formula text to terminate the generated Python string and execute arbitrary Python code with the FreeCAD process's privileges when a victim accepts the dialog. This issue is fixed in version 1.1.2.",
"evidence": "osv:UBUNTU-CVE-2026-73233",
"products": [
{
"name": {
"value": "freecad",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.14.3702+dfsg-4",
"evidence": "/affected/0/versions"
},
{
"value": "0.15.4671+dfsg1-1",
"evidence": "/affected/0/versions"
},
{
"value": "0.15.4671+dfsg1-2",
"evidence": "/affected/0/versions"
},
{
"value": "0.15.4671+dfsg1-3",
"evidence": "/affected/0/versions"
},
{
"value": "0.15.4671+dfsg1-4",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "freecad",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
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"affected_versions": [
{
"value": "0.16+dfsg2-3",
"evidence": "/affected/1/versions"
},
{
"value": "0.16+dfsg2-3build3",
"evidence": "/affected/1/versions"
},
{
"value": "0.16.6712+dfsg1-1",
"evidence": "/affected/1/versions"
},
{
"value": "0.16.6712+dfsg1-1ubuntu1",
"evidence": "/affected/1/versions"
},
{
"value": "0.16.6712+dfsg1-1ubuntu2",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "freecad",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.18.3+dfsg1-1",
"evidence": "/affected/2/versions"
},
{
"value": "0.18.3+dfsg1-4",
"evidence": "/affected/2/versions"
},
{
"value": "0.18.4+dfsg1-1",
"evidence": "/affected/2/versions"
},
{
"value": "0.18.4+dfsg1-2~build1",
"evidence": "/affected/2/versions"
},
{
"value": "0.18.4+dfsg1-2",
"evidence": "/affected/2/versions"
},
{
"value": "0.18.4+dfsg1-2ubuntu8",
"evidence": "/affected/2/versions"
},
{
"value": "0.18.4+dfsg2-1ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "0.18.4+dfsg2-1ubuntu2",
"evidence": "/affected/2/versions"
},
{
"value": "0.18.4+dfsg2-1ubuntu4",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "freecad",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "0.19.1+dfsg1-2",
"evidence": "/affected/3/versions"
},
{
"value": "0.19.2+dfsg1-3",
"evidence": "/affected/3/versions"
},
{
"value": "0.19.2+dfsg1-3ubuntu1",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "freecad",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.1.1+dfsg-3",
"evidence": "/affected/4/versions"
},
{
"value": "1.1.1+dfsg-3build1",
"evidence": "/affected/4/versions"
},
{
"value": "1.1.3+dfsg-3build1",
"evidence": "/affected/4/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2026-73233",
"aliases": [
"UBUNTU-CVE-2026-73233"
],
"metrics": [
{
"type": "CVSS_V4",
"score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "freecad",
"purl": "pkg:deb/ubuntu/freecad?arch=source&distro=xenial",
"ecosystem": "Ubuntu:16.04:LTS"
},
"versions": [
"0.14.3702+dfsg-4",
"0.15.4671+dfsg1-1",
"0.15.4671+dfsg1-2",
"0.15.4671+dfsg1-3",
"0.15.4671+dfsg1-4"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73233.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "freecad",
"binary_version": "0.15.4671+dfsg1-4"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "freecad",
"purl": "pkg:deb/ubuntu/freecad?arch=source&distro=bionic",
"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
"0.16+dfsg2-3",
"0.16+dfsg2-3build3",
"0.16.6712+dfsg1-1",
"0.16.6712+dfsg1-1ubuntu1",
"0.16.6712+dfsg1-1ubuntu2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73233.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "freecad",
"binary_version": "0.16.6712+dfsg1-1ubuntu2"
}
]
}
},
{
"ranges": [
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]
}
],
"package": {
"name": "freecad",
"purl": "pkg:deb/ubuntu/freecad?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
},
"versions": [
"0.18.3+dfsg1-1",
"0.18.3+dfsg1-4",
"0.18.4+dfsg1-1",
"0.18.4+dfsg1-2~build1",
"0.18.4+dfsg1-2",
"0.18.4+dfsg1-2ubuntu8",
"0.18.4+dfsg2-1ubuntu1",
"0.18.4+dfsg2-1ubuntu2",
"0.18.4+dfsg2-1ubuntu4"
],
"database_specific": {
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},
"ecosystem_specific": {
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{
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},
{
"binary_name": "freecad-common",
"binary_version": "0.18.4+dfsg2-1ubuntu4"
},
{
"binary_name": "freecad-python3",
"binary_version": "0.18.4+dfsg2-1ubuntu4"
},
{
"binary_name": "freecad-runtime",
"binary_version": "0.18.4+dfsg2-1ubuntu4"
},
{
"binary_name": "libfreecad-python3-0.18",
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}
]
}
},
{
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"package": {
"name": "freecad",
"purl": "pkg:deb/ubuntu/freecad?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"0.19.1+dfsg1-2",
"0.19.2+dfsg1-3",
"0.19.2+dfsg1-3ubuntu1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-73233.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "freecad",
"binary_version": "0.19.2+dfsg1-3ubuntu1"
},
{
"binary_name": "freecad-common",
"binary_version": "0.19.2+dfsg1-3ubuntu1"
},
{
"binary_name": "freecad-python3",
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},
{
"binary_name": "libfreecad-python3-0.19",
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}
]
}
},
{
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"package": {
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"ecosystem": "Ubuntu:26.10"
},
"versions": [
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"1.1.1+dfsg-3build1",
"1.1.3+dfsg-3build1"
],
"database_specific": {
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},
"ecosystem_specific": {
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{
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},
{
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},
{
"binary_name": "freecad-python3",
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{
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]
}
}
],
"modified": "2026-10-17T13:01:01.165959682Z",
"provider": "osv",
"upstream": [
"CVE-2026-73233"
],
"references": [
"https://ubuntu.com/security/CVE-2026-73233",
"https://www.cve.org/CVERecord?id=CVE-2026-73233",
"https://github.com/FreeCAD/FreeCAD/security/advisories/GHSA-2rq3-gx3h-489q",
"https://github.com/FreeCAD/FreeCAD/pull/31312"
]
},
"related_cves": [
{
"value": "CVE-2026-73233",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 360886,
"published_at": "2026-08-11T20:18:00+00:00"
}