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TI-2020-11873 Aliases CVE-2020-15098GHSA-m5vr-3m74-jwxp

Missing Required Cryptographic Step Leading to Sensitive Information Disclosure in TYPO3 CMS

Priority MEDIUM 42CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Information disclosure, Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-200 and CWE-502.

Summary

In TYPO3 CMS greater than or equal to 9.0.0 and less than 9.5.20, and greater than or equal to 10.0.0 and less than 10.4.6, it has been discovered that an internal verification mechanism can be used to generate arbitrary checksums. This allows to inject arbitrary data having a valid cryptographic message authentication code (HMAC-SHA1) and can lead to various attack chains including potential privilege escalation, insecure deserialization & remote code execution. The overall severity of this vulnerability is high based on mentioned attack chains and the requirement of having a valid backend user session (authenticated). This has been patched in versions 9.5.20 and 10.4.6.

Why it matters now

EPSS 0.02229 82nd percentileScored 2026-11-07
Fix Fixed TYPO3 CMS (TYPO3): 9.5.20typo3/cms-core (Packagist): 9.5.20, 10.4.6+1 more product

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
TYPO3TYPO3 CMS9.0.0 to before 9.5.20; >= 10.0.0, 10.4.69.5.20Patch availableCNA
—typo3/cms-core (Packagist)9.0.0 to before 9.5.209.5.20Patch availableGHSA-m5vr-3m74-jwxp
—typo3/cms-core (Packagist)10.0.0 to before 10.4.610.4.6Patch availableGHSA-m5vr-3m74-jwxp
—typo3/cms (Packagist)10.0.0 to before 10.4.610.4.6Patch availableGHSA-m5vr-3m74-jwxp
—typo3/cms (Packagist)9.0.0 to before 9.5.209.5.20Patch availableGHSA-m5vr-3m74-jwxp
  • TYPO3 CMS VendorTYPO3 Affected 9.0.0 to before 9.5.20; >= 10.0.0, 10.4.6 Fixed in 9.5.20 Patch available CNA
  • typo3/cms-core (Packagist) Vendor— Affected 9.0.0 to before 9.5.20 Fixed in 9.5.20 Patch available GHSA-m5vr-3m74-jwxp
  • typo3/cms-core (Packagist) Vendor— Affected 10.0.0 to before 10.4.6 Fixed in 10.4.6 Patch available GHSA-m5vr-3m74-jwxp
  • typo3/cms (Packagist) Vendor— Affected 10.0.0 to before 10.4.6 Fixed in 10.4.6 Patch available GHSA-m5vr-3m74-jwxp
  • typo3/cms (Packagist) Vendor— Affected 9.0.0 to before 9.5.20 Fixed in 9.5.20 Patch available GHSA-m5vr-3m74-jwxp

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:*9.0.0 to before 9.5.20; 10.0.0 to before 10.4.6VulnerableTYPO3
  • cpe:2.3:a:typo3:typo3:*:*:*:*:*:*:*:* Versions 9.0.0 to before 9.5.20; 10.0.0 to before 10.4.6 Vulnerable ·TYPO3

Remediation

  • Fix · CNA TYPO3 CMS (TYPO3) Fixed in 9.5.20
  • Fix · GHSA-m5vr-3m74-jwxp typo3/cms-core (Packagist) Fixed in 9.5.20 Advisory →
  • Fix · GHSA-m5vr-3m74-jwxp typo3/cms-core (Packagist) Fixed in 10.4.6 Advisory →
  • Fix · GHSA-m5vr-3m74-jwxp typo3/cms (Packagist) Fixed in 10.4.6 Advisory →
  • Fix · GHSA-m5vr-3m74-jwxp typo3/cms (Packagist) Fixed in 9.5.20 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-15098
  2. 2026-10-03 Alias added: GHSA-m5vr-3m74-jwxp

References

Advisory 5

Other 4

  • TI-2023-10314 Persisted Cross-Site Scripting in Frontend Rendering in typo3 CVSS 3.1HIGH 8.8
  • TI-2010-03538 The jumpUrl (aka access tracking) implementation in tslib/class.tslib_fe.php in TYPO3… CVSS 2.0HIGH 7.1
  • TI-2009-00775 The jumpUrl mechanism in class.tslib_fe.php in TYPO3 3.3.x through 3.8.x, 4.0 before… CVSS 2.0MEDIUM 5.0
  • TI-2009-00241 The Indexed Search Engine (indexed_search) system extension in TYPO3 4.0.0 through 4.0.9… CVSS 2.0HIGH 10.0
  • TI-2020-08940 Improperly Controlled Modification of Dynamically-Determined Object Attributes in TYPO3 CMS CVSS 3.1CRITICAL 10.0
  • TI-2011-03994 Improper authentication in TYPO3 CVSS 3.1CRITICAL 9.8
See all 217 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences