Privilege escalation via unrestricted frontend group assignment
Published Aug 25, 2026 · Updated Aug 25, 2026
Broken access control in TYPO3 femanager allows remote authenticated users to assign their accounts to arbitrary frontend groups. The profile edit plugin's default field configuration accepts attacker-selected frontend usergroup assignments without checking an allowlist. A valid frontend account and the profile edit plugin are required, and successful exploitation grants every permission held by the chosen frontend groups.
Summary
What happened
Broken access control in TYPO3 femanager allows remote authenticated users to assign their accounts to arbitrary frontend groups. The profile edit plugin's default field configuration accepts attacker-selected frontend usergroup assignments without checking an allowlist. A valid frontend account and the profile edit plugin are required, and successful exploitation grants every permission held by the chosen frontend groups.
The record
- CVE
- CVE-2026-77133
- Published
- Aug 25, 2026
- Updated
- Aug 25, 2026
- Vendor
- in2code GmbH
- Product
- femanager
- Classifications
- CWE-862, T1098
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 25, 2026CVE publishedPublication date reported by the CVE source.
- Aug 25, 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?
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- Affected versionversion=0 <6.4.5
- Affected versionversion=13.0.0 <13.3.5
- Affected versionversion=7.0.0 <7.5.5
- Affected versionversion=8.0.0 <8.4.2
What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
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Technologies
Your stack
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Your stack
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