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GHSA-p48w-vf3c-rqjx

MediumCVSS 5.4 / 10
Published Apr 29, 2021·Last modified Mar 13, 2026
Affected Components(0)

No affected components available

Description

Problem

It has been discovered that rendering content in the website frontend is vulnerable to cross-site scripting. A valid backend user account is needed to exploit this vulnerability.

The following templates are affected by the vulnerability:

  • Resources/Private/Partials/ContentElements/Carousel/Item/CallToAction.html
  • Resources/Private/Partials/ContentElements/Carousel/Item/Header.html
  • Resources/Private/Partials/ContentElements/Carousel/Item/Text.html
  • Resources/Private/Partials/ContentElements/Carousel/Item/TextAndImage.html
  • Resources/Private/Partials/ContentElements/Header/SubHeader.html

Users of the extension, who have overwritten the affected templates with custom code must manually apply the security fix as shown in this Git commit.

Solution

Update to version 7.1.2, 8.0.8, 9.0.4, 9.1.3, 10.0.10 or 11.0.3 of the Bootstrap Package that fix the problem described.

Updated version are available from the TYPO3 extension manager, Packagist and at https://extensions.typo3.org/extension/download/bootstrap_package/.

Credits

Thanks to TYPO3 security team member Oliver Hader who reported and fixed the issue.

Risk Scores
Base Score
5.4

The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. The attacker needs the user to perform some action, like clicking a link. The vulnerability can affect other systems as well, not just the initial system. There is a low impact on the confidentiality of the information. There is a low impact on the integrity of the data.

Threat Intelligence
5.0

Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.

EPSS
0.94%

The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.

Exploit
Not available

We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.

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