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High

Exposure of Sensitive Information to an Unauthorized Actor in TYPO3 CMS

  • Disclosed: 29.07.2020
  • Updated: 11.10.2026 10:22

Meta

  • CVSS: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C (7.5)
  • CWE-20, CWE-200

Problem

In case an attacker manages to generate a valid cryptographic message authentication code (HMAC-SHA1) - either by using a different existing vulnerability or in case the internal encryptionKey was exposed - it is possible to retrieve arbitrary files of a TYPO3 installation. This includes the possibility to fetch typo3conf/LocalConfiguration.php which again contains the encryptionKey as well as credentials of the database management system being used.

In case a database server is directly accessible either via internet or in a shared hosting network, this allows to completely retrieve, manipulate or delete database contents. This includes creating an administration user account - which can be used to trigger remote code execution by injecting custom extensions.

Solution

Update to TYPO3 versions 9.5.20 or 10.4.6 that fix the problem described.

Credits

Thanks to TYPO3 security team member Oliver Hader who reported and fixed the issue.

References

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
Composer package typo3/cms >= 10.0.0, < 10.4.6, >= 9.0.0, < 9.5.20 10.4.6, 9.5.20
Composer package typo3/cms-core >= 9.0.0, < 9.5.20, >= 10.0.0, < 10.4.6 9.5.20, 10.4.6

References

CVSS score 8.1/10
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE)
CWE-20, CWE-200
Platform
Composer
Package
typo3/cms, typo3/cms-core
Disclosed
29.07.2020
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-3x94-fv5h-5q2c - CC BY 4.0

Vulnerability history: typo3/cms-core

All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (128) in the archive
Total entries
128
First → latest
09.2018 09.2026
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • Critical 1
  • High 35
  • Medium 84
  • Low 8

Disclosures per year

Severity:
  1. TYPO3 CMS - Broken Access Control in Backend and Install Tool
    High CVE-2026-19418 >= 14.0.0, < 14.3.6 14.3.6
  2. TYPO3 CMS has Broken Access Control in its Form Framework
    High CVE-2026-11607 < 10.4.57, >= 11.0.0, < 11.5.51, >= 12.0.0, < 12.4.46, >= 13.0.0, < 13.4.31, >= 14.0.0, < 14.3.3 10.4.57, 11.5.51, 12.4.46, 13.4.31, 14.3.3
  3. TYPO3 CMS: Destructive Actions on File Mount Folders
    High CVE-2026-47343 < 10.4.57, >= 11.0.0, < 11.5.51, >= 12.0.0, < 12.4.46, >= 13.0.0, < 13.4.31, >= 14.0.0, < 14.3.3 10.4.57, 11.5.51, 12.4.46, 13.4.31, 14.3.3
  4. TYPO3 CMS has Privilege Escalation & SQL Injection in its Form Framework
    High CVE-2026-49741 >= 14.0.0, < 14.3.3 14.3.3
  5. TYPO3 CMS has Broken Access Control in its Form Framework
    High CVE-2026-47346 < 10.4.57, >= 11.0.0, < 11.5.51, >= 12.0.0, < 12.4.46, >= 13.0.0, < 13.4.31, >= 14.0.0, < 14.3.3 10.4.57, 11.5.51, 12.4.46, 13.4.31, 14.3.3
  6. TYPO3 CMS has Broken Access Control in its Media Module
    High CVE-2026-49742 >= 11.0.0, < 11.5.51, >= 12.0.0, < 12.4.46, >= 13.0.0, < 13.4.31, >= 14.0.0, < 14.3.3 11.5.51, 12.4.46, 13.4.31, 14.3.3
  7. TYPO3 Allows Privilege Escalation to System Maintainer
    High · 7.2 CVE-2025-47940 >= 10.4.0, < 10.4.50, >= 11.0.0, < 11.5.44, >= 12.0.0, < 12.4.31, >= 13.0.0, < 13.4.12 10.4.50, 11.5.44, 12.4.31, 13.4.12
  8. TYPO3 Possible Insecure Deserialization in Extbase Request Handling
    High · 8.1 ghsa-5h5v-m596-r6rf >= 8.0.0, < 8.7.30, >= 9.0.0, < 9.5.12 8.7.30, 9.5.12
  9. TYPO3 Arbitrary Code Execution and Cross-Site Scripting in Backend API
    High · 8.8 ghsa-x428-565f-8xj2 >= 8.0.0, < 8.7.27, >= 9.0.0, < 9.5.8 8.7.27, 9.5.8
  10. TYPO3 Security Misconfiguration in Frontend Session Handling
    High · 8.2 ghsa-82vp-jr39-4j2j >= 8.0.0, < 8.7.27, >= 9.0.0, < 9.5.8 8.7.27, 9.5.8
  11. TYPO3 Arbitrary Code Execution via File List Module
    High · 8.8 ghsa-f9hr-7cfq-mjg2 >= 8.0.0, < 8.7.23, >= 9.0.0, < 9.5.4 8.7.23, 9.5.4
  12. TYPO3 Security Misconfiguration for Backend User Accounts
    High · 7.5 ghsa-rxc9-f2x6-qh4w >= 8.0.0, < 8.7.23, >= 9.0.0, < 9.5.4 8.7.23, 9.5.4
  13. TYPO3 Denial of Service in Frontend Record Registration
    High · 7.5 ghsa-hjx5-v9xg-7h25 >= 8.0.0, < 8.7.21, >= 7.0.0, < 7.6.32 8.7.21, 7.6.32
  14. TYPO3 Security Misconfiguration in Install Tool Cookie
    High · 7.5 ghsa-ppvg-hw62-6ph9 >= 8.0.0, < 8.7.21, >= 9.0.0, < 9.5.2, >= 7.0.0, < 7.6.32 8.7.21, 9.5.2, 7.6.32
  15. TYPO3 CMS Insecure Deserialization
    High · 7.5 ghsa-96jg-pmc4-cx39 >= 8.5.0, < 8.7.17, >= 9.0.0, < 9.3.1 8.7.17, 9.3.1
  16. TYPO3 CMS Privilege Escalation and SQL Injection
    High · 7.5 ghsa-45wj-jv2h-jwrf >= 8.5.0, < 8.7.17, >= 9.0.0, < 9.3.2 8.7.17, 9.3.2
  17. TYPO3 CMS Insecure Deserialization & Arbitrary Code Execution
    Critical · 9.8 ghsa-cc97-g92w-jm65 >= 8.0.0, < 8.7.17, >= 9.0.0, < 9.3.2, >= 7.0.0, < 7.6.30 8.7.17, 9.3.2, 7.6.30
  18. TYPO3 CMS Authentication Bypass vulnerability
    High · 7.5 ghsa-x4rj-f7m6-42c3 >= 8.0.0, < 8.7.17, >= 9.0.0, < 9.3.2, >= 7.0.0, < 7.6.30 8.7.17, 9.3.2, 7.6.30
  19. TYPO3 Install Tool vulnerable to Code Execution
    High · 7.2 CVE-2024-22188 >= 8.0.0, < 8.7.57, >= 9.0.0, < 9.5.46, >= 10.0.0, < 10.4.43, >= 11.0.0, < 11.5.35, >= 12.0.0, < 12.4.11, >= 13.0.0, < 13.0.1 8.7.57, 9.5.46, 10.4.43, 11.5.35, 12.4.11, 13.0.1
  20. TYPO3 vulnerable to Improper Access Control Persisting File Abstraction Layer Entities via Data Handler
    High · 7.1 CVE-2024-25121 >= 8.0.0, < 8.7.57, >= 9.0.0, < 9.5.46, >= 10.0.0, < 10.4.43, >= 11.0.0, < 11.5.35, >= 12.0.0, < 12.4.11, >= 13.0.0, < 13.0.1 8.7.57, 9.5.46, 10.4.43, 11.5.35, 12.4.11, 13.0.1
  21. TYPO3 is vulnerable to Cross-Site Scripting via frontend rendering
    High · 8.8 CVE-2023-24814 >= 12.0.0, < 12.2.0, >= 11.0.0, < 11.5.23, >= 10.0.0, < 10.4.36, >= 9.0.0, < 9.5.40, >= 8.7.0, < 8.7.51 12.2.0, 11.5.23, 10.4.36, 9.5.40, 8.7.51
  22. TYPO3 CMS vulnerable to Arbitrary Code Execution via Form Framework
    High · 7.5 CVE-2022-23503 >= 8.0.0, < 8.7.49, >= 9.0.0, < 9.5.38, >= 10.0.0, < 10.4.33, >= 11.0.0, < 11.5.20, >= 12.0.0, < 12.1.1 8.7.49, 9.5.38, 10.4.33, 11.5.20, 12.1.1
  23. TYPO3 Vulnerable to Insecure Deserialization
    High · 8.8 CVE-2019-12747 >= 8.0.0, < 8.7.27, >= 9.0.0, < 9.5.8 8.7.27, 9.5.8
  24. TYPO3 Image Processing susceptible to Code Execution
    High · 7.5 CVE-2019-11832 >= 8.0.0, < 8.7.25, >= 9.0.0, < 9.5.6 8.7.25, 9.5.6
  25. TYPO3 Insecure Deserialization in Query Generator & Query View
    High · 8.8 CVE-2019-19849 >= 10.0.0, < 10.2.1, >= 8.0.0, < 8.7.30, >= 9.0.0, < 9.5.12 10.2.1, 8.7.30, 9.5.12
  26. TYPO3 SQL injection vulnerability in the Extbase Framework
    High · 7.4 CVE-2013-1842 >= 4.5.0, < 4.5.24, >= 4.6.0, < 4.6.17, >= 4.7.0, < 4.7.9, >= 6.0.0, < 6.0.3 4.5.24, 4.6.17, 4.7.9, 6.0.3
  27. Cross-Site-Request-Forgery in Backend
    High · 8.8 CVE-2021-41113 >= 11.2.0, < 11.5.0 11.5.0
  28. Broken Access Control in Form Framework
    High · 8.3 CVE-2021-21357 >= 10.0.0, < 10.4.14, >= 11.0.0, < 11.1.1, >= 9.0.0, < 9.5.25 10.4.14, 11.1.1, 9.5.25
  29. Unrestricted File Upload in Form Framework
    High · 8.6 CVE-2021-21355 >= 10.0.0, < 10.4.14, >= 11.0.0, < 11.1.1, >= 9.0.0, < 9.5.25 10.4.14, 11.1.1, 9.5.25
  30. Cleartext storage of session identifier
    High · 8.1 CVE-2020-26228 >= 9.0.0, < 9.5.23, >= 10.0.0, < 10.4.10, >= 8.7.0, < 8.7.38 9.5.23, 10.4.10, 8.7.38
  31. Exposure of Sensitive Information to an Unauthorized Actor in TYPO3 CMS this entry
    High · 8.1 CVE-2020-15099 >= 9.0.0, < 9.5.20, >= 10.0.0, < 10.4.6 9.5.20, 10.4.6
  32. Missing Required Cryptographic Step Leading to Sensitive Information Disclosure in TYPO3 CMS
    High · 8.8 CVE-2020-15098 >= 9.0.0, < 9.5.20, >= 10.0.0, < 10.4.6 9.5.20, 10.4.6
  33. Backend Same-Site Request Forgery in TYPO3 CMS
    High · 8.0 CVE-2020-11069 >= 9.0.0, < 9.5.17, >= 10.0.0, < 10.4.2 9.5.17, 10.4.2
  34. Insecure Deserialization in Backend User Settings in TYPO3 CMS
    High · 8.8 CVE-2020-11067 >= 9.0.0, < 9.5.17, >= 10.0.0, < 10.4.2 9.5.17, 10.4.2
  35. Class destructors causing side-effects when being unserialized in TYPO3 CMS
    High · 8.7 CVE-2020-11066 >= 9.0.0, < 9.5.17, >= 10.0.0, < 10.4.2 9.5.17, 10.4.2
  36. Deserialization of untrusted data in Symfony
    High · 7.1 CVE-2019-10912 >= 9.0.0, < 9.5.8 9.5.8

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