CVE-2026-77146: CWE-862 Missing Authorization in TYPO3 Extension "femanager"
Description
CVE-2026-77146 is a high-severity vulnerability in the TYPO3 extension "femanager" version 8.x. The invitation controller in this extension does not properly stop processing after redirecting on invalid input, such as missing hashes or disabled users. This flaw allows an unauthenticated attacker to reset the password and re-enable arbitrary existing frontend user accounts.
CVSS v4.0
Score 8.3high
Affected software
TYPO3
Extension "femanager"
pkg:composer/in2code/femanagerRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The TYPO3 extension "femanager" version 8.x contains a missing authorization vulnerability (CWE-862) in its invitation controller. When invalid input is encountered (e.g., missing hash, non-existent, disabled, or deleted users), the controller redirects but fails to halt further processing. This logic flaw enables unauthenticated attackers to set new passwords and reactivate arbitrary frontend user accounts, potentially compromising user access controls. The vulnerability has a CVSS 4.0 base score of 8.3, indicating high severity. No official patch or remediation level has been published as of the data provided.
Potential Impact
An unauthenticated attacker can exploit this vulnerability to reset passwords and re-enable arbitrary frontend user accounts in TYPO3 sites using the vulnerable femanager extension. This could lead to unauthorized access to user accounts, potentially compromising user data and site integrity. There are no known exploits in the wild at this time.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or patch links are provided, users should monitor TYPO3 security advisories for updates. Until a fix is available, consider restricting access to the invitation controller or disabling the femanager extension if feasible.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- TYPO3
- Date Reserved
- 2026-08-20T13:10:15.962Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a8d5b66acd9273b49f365d7
Added to database: 08/25/2026, 09:07:50 UTC
Last enriched: 09/10/2026, 06:22:45 UTC
Last updated: 10/08/2026, 18:48:48 UTC
Views: 66
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