High
opencascade — security advisory
An issue was discovered in VrmlData_IndexedFaceSet::TShape in the VRML V2.0 parser in Open CASCADE Technology (OCCT) V8_0_0_rc5 allows attackers to cause a denial of service via a crafted VRML file. The issue occurs because malformed VRML input can trigger dereference of a corrupt or unvalidated pointer during shape construction in libTKDEVRML.so.
- Products
- opencascade
- Affected versions
- 7.3.3+dfsg1-1, 7.3.3+dfsg1-1build1, 7.5.1+dfsg1-2, 7.5.1+dfsg1-2ubuntu1, 7.6.3+dfsg1-7, 7.6.3+dfsg1-7.1, 7.6.3+dfsg1-7.1build1, 7.8.1+dfsg1-3, 7.9.2+dfsg-2, 7.9.2+dfsg-3, 7.9.2+dfsg-4, 7.9.2+dfsg-4build1
- Fixed versions
- Not specified
- CVEs
- CVE-2026-42478
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 03:03 UTC · Revision 1
Source evidence
An issue was discovered in VrmlData_IndexedFaceSet::TShape in the VRML V2.0 parser in Open CASCADE Technology (OCCT) V8_0_0_rc5 allows attackers to cause a denial of service via a crafted VRML file. The issue occurs because malformed VRML input can trigger dereference of a corrupt or unvalidated pointer during shape construction in libTKDEVRML.so.
osv:UBUNTU-CVE-2026-42478
opencascade
Fixed versions: Not specified
opencascade
Fixed versions: Not specified
opencascade
Fixed versions: Not specified
opencascade
Fixed versions: Not specified
opencascade
Fixed versions: Not specified
opencascade
Fixed versions: Not specified
Complete source record
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"id": "8636c2d464fa327a7cf9395795f752398ad4744d222494c433b3e94b82c5e3b7",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2026-42478",
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"title": "UBUNTU-CVE-2026-42478",
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],
"modified": "2026-10-17T13:00:04.843635834Z",
"provider": "osv",
"upstream": [
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],
"references": [
"https://ubuntu.com/security/CVE-2026-42478",
"https://www.cve.org/CVERecord?id=CVE-2026-42478",
"https://gist.github.com/sgInnora/dfba083d04906283e9c92aea78e2d94a"
]
},
"related_cves": [
{
"value": "CVE-2026-42478",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 360277,
"published_at": "2026-05-01T15:16:00+00:00"
}