Vulnerability Description
Contao >=4.0.0 allows backend XSS via HTML attributes to an HTML field. Fixed in 4.4.56, 4.9.18, 4.11.7.
CVSS Score
4.8
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Contao | Contao | >= 4.0.0, < 4.4.56 |
Related Weaknesses (CWE)
References
- https://contao.org/en/news/contao-4-9-16-and-4-11-5-are-available.htmlVendor Advisory
- https://github.com/contao/contao/security/advisories/GHSA-hr3h-x6gq-rqcpThird Party Advisory
- https://contao.org/en/news/contao-4-9-16-and-4-11-5-are-available.htmlVendor Advisory
- https://github.com/contao/contao/security/advisories/GHSA-hr3h-x6gq-rqcpThird Party Advisory
FAQ
What is CVE-2021-35955?
CVE-2021-35955 is a vulnerability with a CVSS score of 4.8 (MEDIUM). Contao >=4.0.0 allows backend XSS via HTML attributes to an HTML field. Fixed in 4.4.56, 4.9.18, 4.11.7.
How severe is CVE-2021-35955?
CVE-2021-35955 has been rated MEDIUM with a CVSS base score of 4.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-35955?
Check the references section above for vendor advisories and patch information. Affected products include: Contao Contao.