[backdrop/backdrop] Backdrop CMS Unrestricted File Upload vulnerability

Backdrop CMS 1.22.0 has Unrestricted File Upload vulnerability via themes that allows attackers to achieve Remote Code Execution.

References

• https://nvd.nist.gov/vuln/detail/CVE-2022-42092
• https://grimthereaperteam.medium.com/backdrop-cms-1-22-0-unrestricted-file-upload-themes-ad42a599561c
• https://github.com/advisories/GHSA-33c9-rppf-m7fq