CVE-2026-6553 | TYPO3 CMS up to 14.2.x User Settings user_settings cleartext storage

VDB-358430 · CVE-2026-6553 · GCVE-0-2026-6553 TYPO3 CMS UP TO 14.2.X USER SETTINGS USER_SETTINGS CLEARTEXT STORAGE HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 5.1 $0-$5k 2.15+ Summaryinfo A vulnerability, which was classified as problematic, was found in TYPO3 CMS up to 14.2.x. The affected element is an unknown function of the component User Settings Module. Such manipulation of the argument user_settings leads to cleartext storage. This vulnerability is referenced as CVE-2026-6553. It is possible to launch the attack remotely. No exploit is available. You should upgrade the affected component. Detailsinfo A vulnerability was found in TYPO3 CMS up to 14.2.x and classified as problematic. Affected by this issue is some unknown functionality of the component User Settings Module. The manipulation of the argument user_settings with an unknown input leads to a cleartext storage vulnerability. Using CWE to declare the problem leads to CWE-312. The product stores sensitive information in cleartext within a resource that might be accessible to another control sphere. Impacted is confidentiality. CVE summarizes: Changing backend users' passwords via the user settings module results in storing the cleartext password in the uc and user_settings fields of the be_users database table. This issue affects TYPO3 CMS version 14.2.0. The advisory is available at typo3.org. This vulnerability is handled as CVE-2026-6553 since 04/17/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1555 by the MITRE ATT&CK project. Upgrading to version 14.3.0 eliminates this vulnerability. Applying the patch 9a6e913f70767f63b322ae3e2d2f4e302624c291 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version. Productinfo Type Content Management System Vendor TYPO3 Name CMS Version 14.0 14.1 14.2 License open-source 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: 5.3 VulDB Meta Temp Score: 5.1 VulDB Base Score: 5.3 VulDB Temp Score: 5.1 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Cleartext storage CWE: CWE-312 / CWE-310 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: CMS 14.3.0 Patch: 9a6e913f70767f63b322ae3e2d2f4e302624c291 Timelineinfo 04/17/2026 CVE reserved 04/21/2026 +4 days Advisory disclosed 04/21/2026 +0 days VulDB entry created 04/21/2026 +0 days VulDB entry last update Sourcesinfo Advisory: typo3.org Status: Confirmed CVE: CVE-2026-6553 (🔒) GCVE (CVE): GCVE-0-2026-6553 GCVE (VulDB): GCVE-100-358430 Entryinfo Created: 04/21/2026 13:15 Changes: 04/21/2026 13:15 (71) Complete: 🔍 Cache ID: 99:33D:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸