CVE-2020-11066

Improperly Controlled Modification of Dynamically-Determined Object Attributes in TYPO3 CMS

CRITICAL
10
CVSS Score
Published: May 13, 2020 at 11:15 PM UTC
Updated: June 17, 2026 at 02:48 AM UTC
1 product affected across 1 vendorTYPO3

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Severity
CRITICAL10
Exploit prediction
EPSS 2%

Description

In TYPO3 CMS greater than or equal to 9.0.0 and less than 9.5.17 and greater than or equal to 10.0.0 and less than 10.4.2, calling unserialize() on malicious user-submitted content can lead to modification of dynamically-determined object attributes and result in triggering deletion of an arbitrary directory in the file system, if it is writable for the web server. It can also trigger message submission via email using the identity of the web site (mail relay). Another insecure deserialization vulnerability is required to actually exploit mentioned aspects. This has been fixed in 9.5.17 and 10.4.2.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

95%
v < 10.4.2v < 9.5.1710.0.0 ≤ v < 10.4.29.0.0 ≤ v < 9.5.17
Affected range stops below 10.4.2, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.5.17, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-915CWE-1321

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