Medium severity · published Apr 27, 2021
CVE-2021-21365
Bootstrap Package is a theme for TYPO3
5.4
CVSS
0.9%
EPSS
No
On KEV
Description
Bootstrap Package is a theme for TYPO3. 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. Users of the extension, who have overwritten the affected templates with custom code must manually apply the security fix. Update to version 7.1.2, 8.0.8, 9.1.4, 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/.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 61% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TY
Typo3 · Typo3
before 7.1.2; 8.0.0 before 8.0.8; 9.0.0 before 9.0.4; 9.1.0 before 9.1.3; 10.0.0 before 10.0.10; 11.0.0 before 11.0.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-21365
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-21365
Patch
https://github.com/benjaminkott/bootstrap_package/commit/de3a568fc311d6712d9339643e51e8627c80530b
Exploit
https://github.com/benjaminkott/bootstrap_package/security/advisories/GHSA-p48w-vf3c-rqjx
Exploit
https://typo3.org/security/advisory/typo3-ext-sa-2021-007
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