Low severity · published Nov 23, 2020
CVE-2020-26229
TYPO3 is an open source PHP based web content management system
3.7
CVSS
0.6%
EPSS
No
On KEV
Description
TYPO3 is an open source PHP based web content management system. In TYPO3 from version 10.4.0, and before version 10.4.10, RSS widgets are susceptible to XML external entity processing. This vulnerability is reasonable, but is theoretical - it was not possible to actually reproduce the vulnerability with current PHP versions of supported and maintained system distributions. At least with libxml2 version 2.9, the processing of XML external entities is disabled per default - and cannot be exploited. Besides that, a valid backend user account is needed. Update to TYPO3 version 10.4.10 to fix the problem described.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:L
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
None
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 51% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TY
Typo3 · Typo3
10.0.0 before 10.4.10 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-26229
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-26229
Third Party Advisory
https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-q9cp-mc96-m4w2
Vendor Advisory
https://typo3.org/security/advisory/typo3-core-sa-2020-012
More from Typo3
10.0
CVE-2020-11066
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…
9.8
CVE-2011-3583
It was found that Typo3 Core versions 4.5.0 - 4.5.5 uses prepared statements that, if the parameter values are not properly replaced, could lead to a SQL Injection vulnerability
9.8
CVE-2011-4628
TYPO3 before 4.3.12, 4.4.x before 4.4.9, and 4.5.x before 4.5.4 allows remote attackers to bypass authentication mechanisms in the backend through a crafted request
8.8
CVE-2025-59017
Broken Access Control in Backend AJAX Routes
8.8
CVE-2024-55921
TYPO3 is a free and open source Content Management Framework