TYPO3 CMS has Insecure Deserialization via Core API
The advisory, in context
Problem
TYPO3's cache frontend (VariableFrontend) and persistent key-value store (Registry) deserialized PHP payloads without integrity validation or class restrictions. An attacker with write access to the underlying storage backend (cache store or sys_registry database table) could inject a crafted serialized payload to trigger PHP Object Injection, potentially exploiting a gadget chain to achieve Remote Code Execution or other high-impact effects.
Exploiting this vulnerability requires direct local write access to the storage, such as the SQL database or file system.
Solution
Update to TYPO3 versions 10.4.57 ELTS, 11.5.51 ELTS, 12.4.46 ELTS, 13.4.31 LTS, 14.3.3 LTS that fix the problem described.
Credits
TYPO3 CMS thanks “z3rco”, Chowdhury Faizal Ahammed, Rick Larabee, Vitaly Simonovich, Nozomu Sasaki, Mert Akdag, “tikket”, Shafi Almutairi for reporting this issue, and to TYPO3 core & security team member Oliver Hader for fixing it.
Resources
Affected packages
Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.
Earlier releases before 10.4.57
Fixed in 10.4.57
110 explicitly affected versions
v10.0.0, v10.1.0, v10.2.0, v10.2.1, v10.2.2, v10.3.0, v10.4.0, v10.4.1, v10.4.10, v10.4.11, v10.4.12, v10.4.13, v10.4.14, v10.4.15, v10.4.16, v10.4.17, v10.4.18, v10.4.19, v10.4.2, v10.4.20, v10.4.21, v10.4.22, v10.4.23, v10.4.24, v10.4.25, v10.4.26, v10.4.27, v10.4.28, v10.4.29, v10.4.3, v10.4.30, v10.4.31, v10.4.32, v10.4.33, v10.4.34, v10.4.36, v10.4.37, v10.4.4, v10.4.5, v10.4.6, v10.4.7, v10.4.8, v10.4.9, v8.7.10, v8.7.11, v8.7.12, v8.7.13, v8.7.14, v8.7.15, v8.7.16, v8.7.17, v8.7.18, v8.7.19, v8.7.20, v8.7.21, v8.7.22, v8.7.23, v8.7.24, v8.7.25, v8.7.26, v8.7.27, v8.7.28, v8.7.29, v8.7.30, v8.7.31, v8.7.32, v8.7.7, v8.7.8, v8.7.9, v9.0.0, v9.1.0, v9.2.0, v9.2.1, v9.3.0, v9.3.1, v9.3.2, v9.3.3, v9.4.0, v9.5.0, v9.5.1, v9.5.10, v9.5.11, v9.5.12, v9.5.13, v9.5.14, v9.5.15, v9.5.16, v9.5.17, v9.5.18, v9.5.19, v9.5.2, v9.5.20, v9.5.21, v9.5.22, v9.5.23, v9.5.24, v9.5.25, v9.5.26, v9.5.27, v9.5.28, v9.5.29, v9.5.3, v9.5.30, v9.5.31, v9.5.4, v9.5.5, v9.5.6, v9.5.7, v9.5.8, v9.5.9
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "10.4.57"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"v10.0.0",
"v10.1.0",
"v10.2.0",
"v10.2.1",
"v10.2.2",
"v10.3.0",
"v10.4.0",
"v10.4.1",
"v10.4.10",
"v10.4.11",
"v10.4.12",
"v10.4.13",
"v10.4.14",
"v10.4.15",
"v10.4.16",
"v10.4.17",
"v10.4.18",
"v10.4.19",
"v10.4.2",
"v10.4.20",
"v10.4.21",
"v10.4.22",
"v10.4.23",
"v10.4.24",
"v10.4.25",
"v10.4.26",
"v10.4.27",
"v10.4.28",
"v10.4.29",
"v10.4.3",
"v10.4.30",
"v10.4.31",
"v10.4.32",
"v10.4.33",
"v10.4.34",
"v10.4.36",
"v10.4.37",
"v10.4.4",
"v10.4.5",
"v10.4.6",
"v10.4.7",
"v10.4.8",
"v10.4.9",
"v8.7.10",
"v8.7.11",
"v8.7.12",
"v8.7.13",
"v8.7.14",
"v8.7.15",
"v8.7.16",
"v8.7.17",
"v8.7.18",
"v8.7.19",
"v8.7.20",
"v8.7.21",
"v8.7.22",
"v8.7.23",
"v8.7.24",
"v8.7.25",
"v8.7.26",
"v8.7.27",
"v8.7.28",
"v8.7.29",
"v8.7.30",
"v8.7.31",
"v8.7.32",
"v8.7.7",
"v8.7.8",
"v8.7.9",
"v9.0.0",
"v9.1.0",
"v9.2.0",
"v9.2.1",
"v9.3.0",
"v9.3.1",
"v9.3.2",
"v9.3.3",
"v9.4.0",
"v9.5.0",
"v9.5.1",
"v9.5.10",
"v9.5.11",
"v9.5.12",
"v9.5.13",
"v9.5.14",
"v9.5.15",
"v9.5.16",
"v9.5.17",
"v9.5.18",
"v9.5.19",
"v9.5.2",
"v9.5.20",
"v9.5.21",
"v9.5.22",
"v9.5.23",
"v9.5.24",
"v9.5.25",
"v9.5.26",
"v9.5.27",
"v9.5.28",
"v9.5.29",
"v9.5.3",
"v9.5.30",
"v9.5.31",
"v9.5.4",
"v9.5.5",
"v9.5.6",
"v9.5.7",
"v9.5.8",
"v9.5.9"
]
}From 11.0.0 before 11.5.51
Fixed in 11.5.51
51 explicitly affected versions
v11.0.0, v11.1.0, v11.1.1, v11.2.0, v11.3.0, v11.3.1, v11.3.2, v11.3.3, v11.4.0, v11.5.0, v11.5.1, v11.5.10, v11.5.11, v11.5.12, v11.5.13, v11.5.14, v11.5.15, v11.5.16, v11.5.17, v11.5.18, v11.5.19, v11.5.2, v11.5.20, v11.5.21, v11.5.22, v11.5.23, v11.5.24, v11.5.25, v11.5.26, v11.5.27, v11.5.28, v11.5.29, v11.5.3, v11.5.30, v11.5.31, v11.5.32, v11.5.33, v11.5.34, v11.5.35, v11.5.36, v11.5.37, v11.5.38, v11.5.39, v11.5.4, v11.5.40, v11.5.41, v11.5.5, v11.5.6, v11.5.7, v11.5.8, v11.5.9
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "11.0.0"
},
{
"fixed": "11.5.51"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"v11.0.0",
"v11.1.0",
"v11.1.1",
"v11.2.0",
"v11.3.0",
"v11.3.1",
"v11.3.2",
"v11.3.3",
"v11.4.0",
"v11.5.0",
"v11.5.1",
"v11.5.10",
"v11.5.11",
"v11.5.12",
"v11.5.13",
"v11.5.14",
"v11.5.15",
"v11.5.16",
"v11.5.17",
"v11.5.18",
"v11.5.19",
"v11.5.2",
"v11.5.20",
"v11.5.21",
"v11.5.22",
"v11.5.23",
"v11.5.24",
"v11.5.25",
"v11.5.26",
"v11.5.27",
"v11.5.28",
"v11.5.29",
"v11.5.3",
"v11.5.30",
"v11.5.31",
"v11.5.32",
"v11.5.33",
"v11.5.34",
"v11.5.35",
"v11.5.36",
"v11.5.37",
"v11.5.38",
"v11.5.39",
"v11.5.4",
"v11.5.40",
"v11.5.41",
"v11.5.5",
"v11.5.6",
"v11.5.7",
"v11.5.8",
"v11.5.9"
]
}From 12.0.0 before 12.4.46
Fixed in 12.4.46
53 explicitly affected versions
v12.0.0, v12.1.0, v12.1.1, v12.1.2, v12.1.3, v12.2.0, v12.3.0, v12.4.0, v12.4.1, v12.4.10, v12.4.11, v12.4.12, v12.4.13, v12.4.14, v12.4.15, v12.4.16, v12.4.17, v12.4.18, v12.4.19, v12.4.2, v12.4.20, v12.4.21, v12.4.22, v12.4.23, v12.4.24, v12.4.25, v12.4.26, v12.4.27, v12.4.28, v12.4.29, v12.4.3, v12.4.30, v12.4.31, v12.4.32, v12.4.33, v12.4.34, v12.4.35, v12.4.36, v12.4.37, v12.4.38, v12.4.39, v12.4.4, v12.4.40, v12.4.41, v12.4.42, v12.4.43, v12.4.44, v12.4.45, v12.4.5, v12.4.6, v12.4.7, v12.4.8, v12.4.9
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "12.0.0"
},
{
"fixed": "12.4.46"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"v12.0.0",
"v12.1.0",
"v12.1.1",
"v12.1.2",
"v12.1.3",
"v12.2.0",
"v12.3.0",
"v12.4.0",
"v12.4.1",
"v12.4.10",
"v12.4.11",
"v12.4.12",
"v12.4.13",
"v12.4.14",
"v12.4.15",
"v12.4.16",
"v12.4.17",
"v12.4.18",
"v12.4.19",
"v12.4.2",
"v12.4.20",
"v12.4.21",
"v12.4.22",
"v12.4.23",
"v12.4.24",
"v12.4.25",
"v12.4.26",
"v12.4.27",
"v12.4.28",
"v12.4.29",
"v12.4.3",
"v12.4.30",
"v12.4.31",
"v12.4.32",
"v12.4.33",
"v12.4.34",
"v12.4.35",
"v12.4.36",
"v12.4.37",
"v12.4.38",
"v12.4.39",
"v12.4.4",
"v12.4.40",
"v12.4.41",
"v12.4.42",
"v12.4.43",
"v12.4.44",
"v12.4.45",
"v12.4.5",
"v12.4.6",
"v12.4.7",
"v12.4.8",
"v12.4.9"
]
}From 13.0.0 before 13.4.31
Fixed in 13.4.31
39 explicitly affected versions
v13.0.0, v13.0.1, v13.1.0, v13.1.1, v13.2.0, v13.2.1, v13.3.0, v13.3.1, v13.4.0, v13.4.1, v13.4.10, v13.4.11, v13.4.12, v13.4.13, v13.4.14, v13.4.15, v13.4.16, v13.4.17, v13.4.18, v13.4.19, v13.4.2, v13.4.20, v13.4.21, v13.4.22, v13.4.23, v13.4.24, v13.4.25, v13.4.26, v13.4.27, v13.4.28, v13.4.29, v13.4.3, v13.4.30, v13.4.4, v13.4.5, v13.4.6, v13.4.7, v13.4.8, v13.4.9
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "13.0.0"
},
{
"fixed": "13.4.31"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"v13.0.0",
"v13.0.1",
"v13.1.0",
"v13.1.1",
"v13.2.0",
"v13.2.1",
"v13.3.0",
"v13.3.1",
"v13.4.0",
"v13.4.1",
"v13.4.10",
"v13.4.11",
"v13.4.12",
"v13.4.13",
"v13.4.14",
"v13.4.15",
"v13.4.16",
"v13.4.17",
"v13.4.18",
"v13.4.19",
"v13.4.2",
"v13.4.20",
"v13.4.21",
"v13.4.22",
"v13.4.23",
"v13.4.24",
"v13.4.25",
"v13.4.26",
"v13.4.27",
"v13.4.28",
"v13.4.29",
"v13.4.3",
"v13.4.30",
"v13.4.4",
"v13.4.5",
"v13.4.6",
"v13.4.7",
"v13.4.8",
"v13.4.9"
]
}From 14.0.0 before 14.3.3
Fixed in 14.3.3
9 explicitly affected versions
v14.0.0, v14.0.1, v14.0.2, v14.1.0, v14.1.1, v14.2.0, v14.3.0, v14.3.1, v14.3.2
View affected-version evidence
{
"ranges": [
{
"events": [
{
"introduced": "14.0.0"
},
{
"fixed": "14.3.3"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"v14.0.0",
"v14.0.1",
"v14.0.2",
"v14.1.0",
"v14.1.1",
"v14.2.0",
"v14.3.0",
"v14.3.1",
"v14.3.2"
]
}References
- https://github.com/TYPO3/typo3/security/advisories/GHSA-c78m-c52x-jgwp
- https://nvd.nist.gov/vuln/detail/CVE-2026-49740
- https://github.com/TYPO3/typo3/commit/48bcf24f31f52cc0b43d3bea4984634bd2cf85c7
- https://github.com/TYPO3/typo3/commit/87cd7c5b710c44d3606fed277b040a75dc6a9c02
- https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2026-49740.yaml
- https://github.com/TYPO3/typo3
- https://typo3.org/security/advisory/typo3-core-sa-2026-018