tinyobjloader — security advisory
An improper array index validation vulnerability exists in the LoadObj functionality of tinyobjloader v2.0-rc1 and tinyobjloader development commit 79d4421. A specially crafted file could lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.
- Products
- tinyobjloader
- Affected versions
- 2.0.0~rc10+dfsg-3, 2.0.0~rc10+dfsg-3build1, 2.0.0~rc10+dfsg-3build2, 2.0.0~rc13+dfsg-2build1, 2.0.0~rc13+dfsg-3, 2.0.0~rc13+dfsg-3build1, 2.0.0~rc13+dfsg-3build2, 2.0.0~rc5+dfsg1-4build1, 2.0.0~rc5+dfsg1-4build2, 2.0.0~rc5+dfsg1-5, 2.0.0~rc5+dfsg1-5build1
- Fixed versions
- Not specified
- CVEs
- CVE-2020-28589
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 00:38 UTC · Revision 1
Source evidence
An improper array index validation vulnerability exists in the LoadObj functionality of tinyobjloader v2.0-rc1 and tinyobjloader development commit 79d4421. A specially crafted file could lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.
osv:UBUNTU-CVE-2020-28589
tinyobjloader
Fixed versions: Not specified
tinyobjloader
Fixed versions: Not specified
tinyobjloader
Fixed versions: Not specified
tinyobjloader
Fixed versions: Not specified
tinyobjloader
Fixed versions: Not specified
Complete source record
{
"id": "fb96ca626acb0a453e7cfa874ac9000c9de226626e966ab51b5de4b5d9f53e8a",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2020-28589",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2020-28589",
"summary": "An improper array index validation vulnerability exists in the LoadObj functionality of tinyobjloader v2.0-rc1 and tinyobjloader development commit 79d4421. A specially crafted file could lead to code execution. An attacker can provide a malicious file to trigger this vulnerability.",
"evidence": "osv:UBUNTU-CVE-2020-28589",
"products": [
{
"name": {
"value": "tinyobjloader",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.0.0~rc5+dfsg1-4build1",
"evidence": "/affected/0/versions"
},
{
"value": "2.0.0~rc5+dfsg1-4build2",
"evidence": "/affected/0/versions"
},
{
"value": "2.0.0~rc5+dfsg1-5",
"evidence": "/affected/0/versions"
},
{
"value": "2.0.0~rc5+dfsg1-5build1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "tinyobjloader",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.0.0~rc10+dfsg-3",
"evidence": "/affected/1/versions"
},
{
"value": "2.0.0~rc10+dfsg-3build1",
"evidence": "/affected/1/versions"
},
{
"value": "2.0.0~rc10+dfsg-3build2",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "tinyobjloader",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.0.0~rc13+dfsg-2build1",
"evidence": "/affected/2/versions"
},
{
"value": "2.0.0~rc13+dfsg-3",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "tinyobjloader",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.0.0~rc13+dfsg-3build2",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "tinyobjloader",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.0.0~rc13+dfsg-3",
"evidence": "/affected/4/versions"
},
{
"value": "2.0.0~rc13+dfsg-3build1",
"evidence": "/affected/4/versions"
},
{
"value": "2.0.0~rc13+dfsg-3build2",
"evidence": "/affected/4/versions"
}
]
}
],
"severity": "critical",
"structured": {
"id": "UBUNTU-CVE-2020-28589",
"aliases": [
"UBUNTU-CVE-2020-28589"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "tinyobjloader",
"purl": "pkg:deb/ubuntu/tinyobjloader?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"2.0.0~rc5+dfsg1-4build1",
"2.0.0~rc5+dfsg1-4build2",
"2.0.0~rc5+dfsg1-5",
"2.0.0~rc5+dfsg1-5build1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-28589.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libtinyobjloader1",
"binary_version": "2.0.0~rc5+dfsg1-5build1"
},
{
"binary_name": "python3-tinyobjloader",
"binary_version": "2.0.0~rc5+dfsg1-5build1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "tinyobjloader",
"purl": "pkg:deb/ubuntu/tinyobjloader?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"2.0.0~rc10+dfsg-3",
"2.0.0~rc10+dfsg-3build1",
"2.0.0~rc10+dfsg-3build2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-28589.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libtinyobjloader2rc10",
"binary_version": "2.0.0~rc10+dfsg-3build2"
},
{
"binary_name": "python3-tinyobjloader",
"binary_version": "2.0.0~rc10+dfsg-3build2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "tinyobjloader",
"purl": "pkg:deb/ubuntu/tinyobjloader?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"2.0.0~rc13+dfsg-2build1",
"2.0.0~rc13+dfsg-3"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-28589.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libtinyobjloader2rc13",
"binary_version": "2.0.0~rc13+dfsg-3"
},
{
"binary_name": "python3-tinyobjloader",
"binary_version": "2.0.0~rc13+dfsg-3"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "tinyobjloader",
"purl": "pkg:deb/ubuntu/tinyobjloader?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"2.0.0~rc13+dfsg-3build2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-28589.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libtinyobjloader2rc13",
"binary_version": "2.0.0~rc13+dfsg-3build2"
},
{
"binary_name": "python3-tinyobjloader",
"binary_version": "2.0.0~rc13+dfsg-3build2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "tinyobjloader",
"purl": "pkg:deb/ubuntu/tinyobjloader?arch=source&distro=resolute",
"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
"2.0.0~rc13+dfsg-3",
"2.0.0~rc13+dfsg-3build1",
"2.0.0~rc13+dfsg-3build2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-28589.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "libtinyobjloader2rc13",
"binary_version": "2.0.0~rc13+dfsg-3build2"
},
{
"binary_name": "python3-tinyobjloader",
"binary_version": "2.0.0~rc13+dfsg-3build2"
}
]
}
}
],
"modified": "2026-10-17T12:55:53.324940226Z",
"provider": "osv",
"upstream": [
"CVE-2020-28589"
],
"references": [
"https://ubuntu.com/security/CVE-2020-28589",
"https://talosintelligence.com/vulnerability_reports/TALOS-2020-1212",
"https://www.cve.org/CVERecord?id=CVE-2020-28589"
]
},
"related_cves": [
{
"value": "CVE-2020-28589",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 354227,
"published_at": "2021-08-11T13:15:00+00:00"
}