CVE-2026-46721Network attack vector

Privilege escalation via unrestricted frontend user groups

Published May 19, 2026 · Updated May 19, 2026

Broken access control in TYPO3 Frontend User Registration before 13.2.4 and 14.0.0 through 14.0.1 allows remote attackers to elevate privileges. The create and edit flows accept unrestricted user properties and assign submitted frontend user groups without an authorization check. No authentication is required when registration is enabled; a crafted account gains access to content and functions reserved for privileged frontend groups.

CVSS severity6.9
Medium
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Broken access control in TYPO3 Frontend User Registration before 13.2.4 and 14.0.0 through 14.0.1 allows remote attackers to elevate privileges. The create and edit flows accept unrestricted user properties and assign submitted frontend user groups without an authorization check. No authentication is required when registration is enabled; a crafted account gains access to content and functions reserved for privileged frontend groups.

The record

CVE
CVE-2026-46721
Published
May 19, 2026
Updated
May 19, 2026
Vendor
in2code GmbH
Product
Frontend User Registration (sf_register)
Classifications
CWE-639, CWE-915, T1098
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 19, 2026CVE publishedPublication date reported by the CVE source.
  2. May 19, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <13.2.4
  2. Affected versionversion=14.0.0 <14.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

in2code GmbH · Frontend User Registration (sf_register)version=0 <13.2.4; version=14.0.0 <14.0.2

Published CVSS scores

6.9TYPO3CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
CWE-915Improperly Controlled Modification of Dynamically-Determined Object Attributes
T1098Account Manipulation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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