Vulnerability · Published Nov 23, 2020 · Assigned by GitHub_M
CVE-2020-26229XML External Entity in Dashboard Widget
Low 3.7
In plain English
A low-severity XML external entity in TYPO3.CMS from TYPO3. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 51% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist | typo3/cms | 10.4.10 | GHSA-q9cp-mc96-m4w2 |
| Packagist | typo3/cms-core | 10.4.10 | GHSA-q9cp-mc96-m4w2 |
Affected products (as reported)
Weakness: CWE-611 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:L
References
- https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-q9cp-mc96-m4w2 x_refsource_CONFIRM
- https://typo3.org/security/advisory/typo3-core-sa-2020-012 x_refsource_MISC