What’s Vulnerable › Vulnerabilities

CVE-2024-24785: Errors returned from JSON marshaling may break template escaping in html/template

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-03-05 · updated 2026-06-17

Description

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.

Affected products

• Go standard library html/template: before 1.21.8; from 1.22.0-0 before 1.22.1 — fixed in 1.21.8, 1.22.1

How to fix

Upgrade to a fixed version: Go standard library html/template 1.21.8, 1.22.1. Check the vendor advisory for mitigations.

References

• http://www.openwall.com/lists/oss-security/2024/03/08/4
• 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
• 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/

Get alerted when CVE-2024-24785 or the next vulnerability affects your stack