CVE-2021-32667

low-risk
Published 2021-07-20

TYPO3 is an open source PHP based web content management system. Versions 9.0.0 through 9.5.28, 10.0.0 through 10.4.17, and 11.0.0 through 11.3.0 have a cross-site scripting vulnerability. When _Page TSconfig_ settings are not properly encoded, corresponding page preview module (_Web>View_) is vulnerable to persistent cross-site scripting. A valid backend user account is needed to exploit this vulnerability. TYPO3 versions 9.5.29, 10.4.18, 11.3.1 contain a patch for this issue.

Do I need to act?

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0.41% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.4/10 Medium
NETWORK / HIGH complexity

Affected Products (1)

Affected Vendors

Typo3

References (4)

Third Party Advisory https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-8mq9-fqv8-59wf
Vendor Advisory https://typo3.org/security/advisory/typo3-core-sa-2021-009
Third Party Advisory https://github.com/TYPO3/TYPO3.CMS/security/advisories/GHSA-8mq9-fqv8-59wf
Vendor Advisory https://typo3.org/security/advisory/typo3-core-sa-2021-009
27
/ 100
low-risk
Severity 20/34 · Moderate
Exploitability 2/34 · Minimal
Exposure 5/34 · Minimal