XSS in Benjaminkott Bootstrap Package
CVE-2021-21365
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/.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.009 (59.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- Benjaminkott Bootstrap Package — versions >= 7.1.0, < 7.1.2, >= 8.0.0, < 8.0.8, >= 9.0.0, < 9.0.4
- TYPO3
Weakness classification (CWE)
References
- github.com/benjaminkott/bootstrap_package/security/advisories/GHSA-p48w-vf3c-rq… (Exploit, Third Party Advisory)
- github.com/benjaminkott/bootstrap_package/commit/de3a568fc311d6712d9339643e51e8… (Patch, Third Party Advisory)
- typo3.org/security/advisory/typo3-ext-sa-2021-007 (Exploit, Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-21365?
- CVE-2021-21365 is a medium-severity vulnerability in Benjaminkott Bootstrap Package, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-04-27.
- How severe is CVE-2021-21365?
- Medium severity. CVSS v3 base score is 5.4 out of 10.