High
Security advisory
TYPO3 is an open source PHP based web content management system. In TYPO3 before versions 9.5.23 and 10.4.10 user session identifiers were stored in cleartext - without processing with additional cryptographic hashing algorithms. This vulnerability cannot be exploited directly and occurs in combination with a chained attack - like for instance SQL injection in any other component of the system. Update to TYPO3 versions 9.5.23 or 10.4.10 that fix the problem described.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2020-26228
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 08:57 UTC · Revision 1
Source evidence
TYPO3 is an open source PHP based web content management system. In TYPO3 before versions 9.5.23 and 10.4.10 user session identifiers were stored in cleartext - without processing with additional cryptographic hashing algorithms. This vulnerability cannot be exploited directly and occurs in combination with a chained attack - like for instance SQL injection in any other component of the system. Update to TYPO3 versions 9.5.23 or 10.4.10 that fix the problem described.
osv:CVE-2020-26228
Complete source record
{
"id": "a37036a70b93fede4d954cacb7eda191334a5aa4450cdc747078b8dedae3ebd2",
"url": "https://osv.dev/vulnerability/CVE-2020-26228",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2020-26228",
"summary": "TYPO3 is an open source PHP based web content management system. In TYPO3 before versions 9.5.23 and 10.4.10 user session identifiers were stored in cleartext - without processing with additional cryptographic hashing algorithms. This vulnerability cannot be exploited directly and occurs in combination with a chained attack - like for instance SQL injection in any other component of the system. Update to TYPO3 versions 9.5.23 or 10.4.10 that fix the problem described.",
"evidence": "osv:CVE-2020-26228",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2020-26228",
"aliases": [
"BIT-typo3-2020-26228",
"CVE-2020-26228",
"GHSA-954j-f27r-cj52"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/TYPO3/typo3",
"type": "GIT",
"events": [
{
"introduced": "41235ff8e38c6f3401df03ae8beddd62d662c525"
},
{
"fixed": "e444d4492ec188d1ef996ae413a296e34850c4ec"
},
{
"introduced": "c91b70e450c52d29ffb08115fffbb7832b15a330"
},
{
"fixed": "05dd328bdc752c647316be991e593a79e71a1b08"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "9.0.0"
},
{
"fixed": "9.5.23"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "10.0.0"
},
{
"fixed": "10.4.10"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"v10.4.9",
"v9.5.22",
"v10.4.8",
"v10.4.7",
"v9.5.21",
"v10.4.6",
"v9.5.20",
"v10.4.5",
"v10.4.4",
"v9.5.19",
"v10.4.3",
"v9.5.18",
"v9.5.17",
"v10.4.2",
"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-2020-26228.json"
}
},
{
"ranges": [
{
"repo": "https://github.com/typo3/typo3",
"type": "GIT",
"events": [
{
"introduced": "41235ff8e38c6f3401df03ae8beddd62d662c525"
},
{
"fixed": "e444d4492ec188d1ef996ae413a296e34850c4ec"
},
{
"introduced": "c91b70e450c52d29ffb08115fffbb7832b15a330"
},
{
"fixed": "05dd328bdc752c647316be991e593a79e71a1b08"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "9.0.0"
},
{
"fixed": "9.5.23"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "10.0.0"
},
{
"fixed": "10.4.10"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"v10.4.9",
"v9.5.22",
"v10.4.8",
"v10.4.7",
"v9.5.21",
"v10.4.6",
"v9.5.20",
"v10.4.5",
"v10.4.4",
"v9.5.19",
"v10.4.3",
"v9.5.18",
"v9.5.17",
"v10.4.2",
"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-2020-26228.json"
}
}
],
"modified": "2026-10-24T10:51:22.678645407Z",
"provider": "osv",
"references": [
"https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-954j-f27r-cj52",
"https://typo3.org/security/advisory/typo3-core-sa-2020-011"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*"
],
"vendor_product": "typo3:typo3",
"extracted_events": [
{
"range": [
{
"introduced": "9.0.0"
},
{
"fixed": "9.5.23"
},
{
"introduced": "10.0.0"
},
{
"fixed": "10.4.10"
}
],
"source": "CPE_RANGE"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2020-26228",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 442570,
"published_at": "2020-11-23T21:15:12.14+00:00"
}