TYPO3 femanager up to 8.4.1 Invitation Controller redirect

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.1$0-$5k0.32+

Summaryinfo

A vulnerability labeled as problematic has been found in TYPO3 femanager up to 8.4.1. This issue affects some unknown processing of the component Invitation Controller. The manipulation results in redirect. This vulnerability is reported as CVE-2026-77146. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability classified as problematic has been found in TYPO3 femanager up to 8.4.1. Affected is an unknown part of the component Invitation Controller. The manipulation with an unknown input leads to a redirect vulnerability. CWE is classifying the issue as CWE-601. A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks. This is going to have an impact on integrity. CVE summarizes:

The extension's invitation controller fails to stop processing after redirecting on invalid input (missing hash, non-existent, disabled, or deleted users), allowing an unauthenticated attacker to set a new password for and re-enable an arbitrary existing frontend user account. This vulnerability is only present in the 8.x versions of the extension.

The advisory is shared for download at typo3.org. This vulnerability is traded as CVE-2026-77146 since 08/20/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1204.001.

Upgrading to version 8.4.2 eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Redirect
CWE: CWE-601
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: femanager 8.4.2

Timelineinfo

08/20/2026 CVE reserved
08/25/2026 +5 days Advisory disclosed
08/25/2026 +0 days VulDB entry created
08/25/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: typo3.org
Status: Confirmed

CVE: CVE-2026-77146 (🔒)
GCVE (CVE): GCVE-0-2026-77146
GCVE (VulDB): GCVE-100-394992

Entryinfo

Created: 08/25/2026 11:32
Changes: 08/25/2026 11:32 (67)
Complete: 🔍
Cache ID: 216::103

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