CVE-2020-11066 json
Improperly Controlled Modification of Dynamically-Determined Object Attributes in TYPO3 CMS
published 2020-05-13 6 y ago modified 2026-09-10 1 mo ago also BIT-typo3-2020-11066 , EUVD-2020-0402 , GHSA-2rxh-h6h9-qrqc
- cvss
- 8.7
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.5%
- EPSS 1.5% chance of exploitation in 30 days, percentile 74%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- packagist typo3/cms-core 9.5.17, 10.4.2
- packagist typo3/cms 9.5.17, 10.4.2
- bitnami typo3 9.5.17, 10.4.2
- typo3 typo3 9.5.17, 10.4.2
Exploit prediction
1.51% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:H |
| GitHub | 3.1 | 8.7 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:H |
| NVD | 3.1 | 10.0 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H |
| NVD | 2.0 | 6.4 | AV:N/AC:L/Au:N/C:N/I:P/A:P |
| OSV | 3.1 | 10.0 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | typo3/cms-core | >=9.0.0, <9.5.17 >=10.0.0, <10.4.2 |
9.5.17 10.4.2 |
| packagist | typo3/cms | >=10.0.0, <10.4.2 >=9.0.0, <9.5.17 |
10.4.2 9.5.17 |
| bitnami | typo3 | >=9.0.0, <9.5.17 >=10.0.0, <10.4.2 |
9.5.17 10.4.2 |
Affected products
- TYPO3 TYPO3 CMS
Classification
References
-
github.com
/TYPO3/TYPO3.CMS/security/advisories/GHSA-2rxh-h6h9-qrqc
web, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2020-11066
advisory
-
github.com
/FriendsOfPHP/security-advisories/blob/master/typo3/cms-core/CVE-2020-11066.yaml
web
-
github.com
/FriendsOfPHP/security-advisories/blob/master/typo3/cms/CVE-2020-11066.yaml
web
-
typo3.org
/security/advisory/typo3-core-sa-2020-004
web
Sources
- CVE List CVE-2020-11066
- GitHub Advisory GHSA-2rxh-h6h9-qrqc
- NVD CVE-2020-11066
- OSV BIT-typo3-2020-11066
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