EUVD-2026-30857
GHSA-v348-vr4q-fv9p
CVSS VectorNVD
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/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
Lifecycle Timeline
3DescriptionNVD
The create and edit flows do not restrict which user properties may be submitted and do not enforce access control on the frontend user group assignment. As a result, an attacker can assign an arbitrary frontend user group to a newly registered or edited account, gaining unauthorized access to content and functionality restricted to privileged frontend user groups.
AnalysisAI
Mass assignment in the TYPO3 'Frontend User Registration' extension allows unauthenticated remote attackers to assign arbitrary frontend user groups to accounts created or modified via the public registration and profile-edit flows. Because the extension neither restricts which user properties may be submitted nor enforces server-side access control on the group assignment field, an attacker registers or edits an account while injecting a privileged frontend user group identifier, immediately gaining access to content and functionality that would otherwise require elevated membership. …
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External POC / Exploit Code
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