High
Security advisory
In TYPO3 CMS 9.0.0 through 9.5.16 and 10.0.0 through 10.4.1, it has been discovered that backend user settings (in $BE_USER->uc) are vulnerable to insecure deserialization. In combination with vulnerabilities of third party components, this can lead to remote code execution. A valid backend user account is needed to exploit this vulnerability. This has been fixed in 9.5.17 and 10.4.2.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-11067
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 08:53 UTC · Revision 1
Source evidence
In TYPO3 CMS 9.0.0 through 9.5.16 and 10.0.0 through 10.4.1, it has been discovered that backend user settings (in $BE_USER->uc) are vulnerable to insecure deserialization. In combination with vulnerabilities of third party components, this can lead to remote code execution. A valid backend user account is needed to exploit this vulnerability. This has been fixed in 9.5.17 and 10.4.2.
osv:CVE-2020-11067
Complete source record
{
"id": "e46f8a006ad85352f2f7f4a885863c38141cfc247f7167198fb387dafdadb1e5",
"url": "https://osv.dev/vulnerability/CVE-2020-11067",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-11067",
"summary": "In TYPO3 CMS 9.0.0 through 9.5.16 and 10.0.0 through 10.4.1, it has been discovered that backend user settings (in $BE_USER->uc) are vulnerable to insecure deserialization. In combination with vulnerabilities of third party components, this can lead to remote code execution. A valid backend user account is needed to exploit this vulnerability. This has been fixed in 9.5.17 and 10.4.2.",
"evidence": "osv:CVE-2020-11067",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2020-11067",
"aliases": [
"BIT-typo3-2020-11067",
"CVE-2020-11067",
"GHSA-2wj9-434x-9hvp"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/TYPO3/typo3",
"type": "GIT",
"events": [
{
"introduced": "41235ff8e38c6f3401df03ae8beddd62d662c525"
},
{
"last_affected": "1fc9f156fa3783e1f3327afa2ec772b8253c379f"
},
{
"introduced": "c91b70e450c52d29ffb08115fffbb7832b15a330"
},
{
"last_affected": "d54b7fc011b9b9d4ecea8196b59fe919c2c09406"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "9.0.0"
},
{
"last_affected": "9.5.16"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "10.0.0"
},
{
"last_affected": "10.4.1"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"v10.4.1",
"v9.5.16",
"v10.4.0",
"v9.5.15",
"v10.3.0",
"v9.5.14",
"v9.5.13",
"v9.5.12",
"v10.2.0",
"v9.5.11",
"v9.5.10",
"v10.1.0",
"v9.5.9",
"v10.0.0",
"v9.5.8",
"v9.5.7",
"v9.5.6",
"v9.5.5",
"v9.5.4",
"v9.5.3",
"v9.5.2",
"v9.5.1",
"v9.5.0",
"v9.4.0",
"v9.3.0",
"v9.2.0",
"v9.1.0",
"v9.0.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-11067.json"
}
},
{
"ranges": [
{
"repo": "https://github.com/typo3/typo3",
"type": "GIT",
"events": [
{
"introduced": "41235ff8e38c6f3401df03ae8beddd62d662c525"
},
{
"last_affected": "1fc9f156fa3783e1f3327afa2ec772b8253c379f"
},
{
"introduced": "c91b70e450c52d29ffb08115fffbb7832b15a330"
},
{
"last_affected": "d54b7fc011b9b9d4ecea8196b59fe919c2c09406"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "9.0.0"
},
{
"last_affected": "9.5.16"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "10.0.0"
},
{
"last_affected": "10.4.1"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"v10.4.1",
"v9.5.16",
"v10.4.0",
"v9.5.15",
"v10.3.0",
"v9.5.14",
"v9.5.13",
"v9.5.12",
"v10.2.0",
"v9.5.11",
"v9.5.10",
"v10.1.0",
"v9.5.9",
"v10.0.0",
"v9.5.8",
"v9.5.7",
"v9.5.6",
"v9.5.5",
"v9.5.4",
"v9.5.3",
"v9.5.2",
"v9.5.1",
"v9.5.0",
"v9.4.0",
"v9.3.0",
"v9.2.0",
"v9.1.0",
"v9.0.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-11067.json"
}
}
],
"modified": "2026-10-24T10:50:36.697023966Z",
"provider": "osv",
"references": [
"https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-2wj9-434x-9hvp"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*"
],
"vendor_product": "typo3:typo3",
"extracted_events": [
{
"range": [
{
"introduced": "9.0.0"
},
{
"last_affected": "9.5.16"
},
{
"introduced": "10.0.0"
},
{
"last_affected": "10.4.1"
}
],
"source": "CPE_RANGE"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2020-11067",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 442341,
"published_at": "2020-05-14T00:15:11.4+00:00"
}