UpHeron
All vulnerabilities

Servers and applications

CVE-2023-36806

Cross-site scripting in widgets with units

Severity
Medium 5.4
Published
25 Jul 2023
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
4.9.42, 4.13.28, 5.1.10
Also known as
GHSA-4gpr-p634-922x
Sources
NVD, Project advisories (GitHub)

Description

Contao is an open source content management system. Starting in version 4.0.0 and prior to versions 4.9.42, 4.13.28, and 5.1.10, it is possible for untrusted backend users to inject malicious code into headline fields in the back end, which will be executed both in the element preview (back end) and on the website (front end). Installations are only affected if there are untrusted back end users…

Affected software

SoftwareAffected versions
ContaoServers and applications · cpe:a:contao:contao
  • From 4.0.0 before 4.9.42
  • From 4.10.0 before 4.13.28
  • From 5.0.0 before 5.1.10
ContaoServers and applications · github:contao/contao
  • From 4.0.0 before 4.9.42

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2023-36806
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2023-36806
  • GitHub Advisory Database https://github.com/advisories/GHSA-4gpr-p634-922x
  • github.com https://github.com/contao/contao/security/advisories/GHSA-4gpr-p634-922x