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CVE-2019-12747

TYPO3 Vulnerable to Insecure Deserialization

8.8 HighFix available

TYPO3 8.x through 8.7.26 and 9.x through 9.5.7 allows Deserialization of Untrusted Data.

Attack profile

How easy it is to exploit

Attack vector
Network
Complexity
Low
Privileges needed
Low
User interaction
None

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

1.53%Up 1.1 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 8.8

TYPO3 8.x through 8.7.26 and 9.x through 9.5.7 allows Deserialization of Untrusted Data.

Record
CVE-2019-12747
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0
6.5 MediumAV:N/AC:L/Au:S/C:P/I:P/A:P
Weakness
CWE-502
Updated
2026-11-02
CVE List No score

TYPO3 8.x through 8.7.26 and 9.x through 9.5.7 allows Deserialization of Untrusted Data.

Record
CVE-2019-12747
Updated
2026-11-02
EUVDEUVD-2022-3124 No score

TYPO3 8.x through 8.7.26 and 9.x through 9.5.7 allows Deserialization of Untrusted Data.

Record
EUVD-2022-3124
Updated
2026-11-03
GitHub AdvisoriesGHSA-86hp-xrhj-fhpq 8.8

TYPO3 Vulnerable to Insecure Deserialization

TYPO3 8.x through 8.7.26 and 9.x through 9.5.7 allows Deserialization of Untrusted Data.

Record
GHSA-86hp-xrhj-fhpq
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-502
Updated
2026-11-02
OSV 8.8

TYPO3 8.x through 8.7.26 and 9.x through 9.5.7 allows Deserialization of Untrusted Data.

Record
CVE-2019-12747
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVGHSA-86hp-xrhj-fhpq 8.8

TYPO3 Vulnerable to Insecure Deserialization

TYPO3 8.x through 8.7.26 and 9.x through 9.5.7 allows Deserialization of Untrusted Data.

Record
GHSA-86hp-xrhj-fhpq
CVSS 3.1
8.8 HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-502
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
typo3/cms-core
Packagist
 8.0.0 up to 8.7.27
8.7.27
typo3/cms-core
Packagist
 9.0.0 up to 9.5.8
9.5.8
typo3/cms
Packagist
 8.0.0 up to 8.7.27
8.7.27
typo3/cms
Packagist
 9.0.0 up to 9.5.8
9.5.8
typo3/cms-core
Packagist
 8.0.0 up to 8.7.27, plus listed versions
v8.7.10v8.7.11v8.7.12v8.7.13v8.7.14
Show 15 moreShow less
v8.7.15v8.7.16v8.7.17v8.7.18v8.7.19v8.7.20v8.7.21v8.7.22v8.7.23v8.7.24v8.7.25v8.7.26v8.7.7v8.7.8v8.7.9
8.7.27
typo3/cms-core
Packagist
 9.0.0 up to 9.5.8, plus listed versions
v9.0.0v9.1.0v9.2.0v9.2.1v9.3.0
Show 12 moreShow less
v9.3.1v9.3.2v9.3.3v9.4.0v9.5.0v9.5.1v9.5.2v9.5.3v9.5.4v9.5.5v9.5.6v9.5.7
9.5.8
typo3/cms
Packagist
 8.0.0 up to 8.7.27, plus listed versions
8.0.18.1.08.1.18.1.28.2.0
Show 36 moreShow less
8.2.18.3.08.3.18.4.08.4.18.5.08.5.18.6.08.6.18.7.08.7.18.7.2v8.7.10v8.7.11v8.7.12v8.7.13v8.7.14v8.7.15v8.7.16v8.7.17v8.7.18v8.7.19v8.7.20v8.7.21v8.7.22v8.7.23v8.7.24v8.7.25v8.7.26v8.7.3v8.7.4v8.7.5v8.7.6v8.7.7v8.7.8v8.7.9
8.7.27
typo3/cms
Packagist
 9.0.0 up to 9.5.8, plus listed versions
v9.0.0v9.1.0v9.2.0v9.2.1v9.3.0
Show 12 moreShow less
v9.3.1v9.3.2v9.3.3v9.4.0v9.5.0v9.5.1v9.5.2v9.5.3v9.5.4v9.5.5v9.5.6v9.5.7
9.5.8

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2019-12747 is a high vulnerability (CVSS 8.8) in Typo3, published July 9, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.53%, the 74th percentile. Fixed in typo3/cms-core 8.7.27.

References

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