[backdrop/backdrop] Cross-site Scripting in Backdrop CMS

Backdrop CMS version 1.23.0 was discovered to contain a stored cross-site scripting (XSS) vulnerability via Post content. The account must have admin privileges.

References

• https://nvd.nist.gov/vuln/detail/CVE-2022-42096
• https://github.com/backdrop/backdrop/releases/tag/1.23.0
• https://github.com/bypazs/CVE-2022-42096
• https://grimthereaperteam.medium.com/cve-2022-42096-backdrop-xss-at-posts-437c305036e2
• https://github.com/advisories/GHSA-g8jw-8vpv-pv5q