If errors returned from MarshalJSON methods contain user controlled data, they may be used to break the contextual auto-escaping behavior of the html/template package, allowing for subsequent actions to inject unexpected content into templates.

References

• https://nvd.nist.gov/vuln/detail/CVE-2024-24785
• https://go.dev/cl/564196
• https://go.dev/issue/65697
• https://groups.google.com/g/golang-announce/c/5pwGVUPoMbg
• https://pkg.go.dev/vuln/GO-2024-2610
• https://security.netapp.com/advisory/ntap-20240329-0008
• http://www.openwall.com/lists/oss-security/2024/03/08/4