TYPO3 CMS - Privilege Escalation & SQL Injection in Form Framework

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Summary

CVECVE-2026-49741
StatePUBLISHED
AssignerTYPO3
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-06-09 11:16:53 UTC
Updated2026-06-09 13:46:50 UTC
DescriptionBackend users with write access to the form_definition database table were able to directly create, update, or delete form definition records via DataHandler, bypassing the Form Framework's persistence validation and permission checks. This allowed injecting arbitrary form configurations, re-enabling attack vectors originally addressed in TYPO3-CORE-SA-2018-003, including SQL injection and privilege escalation. This issue affects TYPO3 CMS versions 14.0.0-14.3.3.

Risk And Classification

Primary CVSS: v4.0 8.7 HIGH from f4fb688c-4412-4426-b4b8-421ecf27b14a

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS: 0.000270000 probability, percentile 0.080800000 (date 2026-06-09)

Problem Types: CWE-89 | CWE-862 | CWE-862 CWE-862 Missing Authorization | CWE-89 CWE-89 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

VersionSourceTypeScoreSeverityVector
4.0f4fb688c-4412-4426-b4b8-421ecf27b14aSecondary8.7HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/C...
4.0CNACVSS8.7HIGHCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N

CVSS v4.0 Breakdown

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
Low
User Interaction
None
Confidentiality
High
Integrity
High
Availability
Low
Sub Conf.
None
Sub Integrity
None
Sub Availability
None

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA TYPO3 TYPO3 CMS affected 14.0.0 14.3.3 semver Not specified

References

ReferenceSourceLinkTags
typo3.org/security/advisory/typo3-core-sa-2018-003 f4fb688c-4412-4426-b4b8-421ecf27b14a typo3.org
github.com/TYPO3/typo3/commit/c90493c13b633f328cf2c066182c90a1655ff0fc f4fb688c-4412-4426-b4b8-421ecf27b14a github.com
typo3.org/security/advisory/typo3-core-sa-2026-017 f4fb688c-4412-4426-b4b8-421ecf27b14a typo3.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Selçuk Güney (en)

CNA: Oliver Hader (en)

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