MEDIUM5.4

GHSA-7q33-hxwj-7p8v

TYPO3 Cross-Site Scripting in Backend Modal Component

Quick fix

GHSA-7q33-hxwj-7p8v — typo3/cms: upgrade to the fixed version with the command below.

composer require typo3/cms:^7.6.32

Details

Failing to properly encode user input, notifications shown in modal windows in the TYPO3 backend are vulnerable to cross-site scripting. A valid backend user account is needed in order to exploit this vulnerability.

Are you affected?

Enter the version of the package you're using.

Affected packages

Packagist/typo3/cms

Introduced in: 7.0.0Fixed in: 7.6.32

Fixcomposer require typo3/cms:^7.6.32

Packagist/typo3/cms

Introduced in: 8.0.0Fixed in: 8.7.21

Fixcomposer require typo3/cms:^8.7.21

Packagist/typo3/cms

Introduced in: 9.0.0Fixed in: 9.5.2

Fixcomposer require typo3/cms:^9.5.2

References

https://github.com/TYPO3/typo3/commit/02cd5c97228cba477d16c68e28309ce25c433ce9[WEB]
https://github.com/TYPO3/typo3/commit/89a38ad0ef9411745954f53f29bea5b8ce81cd32[WEB]
https://github.com/TYPO3/typo3/commit/c35646c3f7795a4a7b0046a88f146b490fa4883c[WEB]
https://github.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/2018-12-11-2.yaml[WEB]
https://github.com/TYPO3/typo3[PACKAGE]
https://typo3.org/security/advisory/typo3-core-sa-2018-007[WEB]