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

> Attackers can inject unexpected content into templates by exploiting errors from JSON marshaling, bypassing auto-escaping in Go's html/template package.

- **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 5 Mar 2024
- **Updated:** 14 Mar 2025
- **Also known as:** AZL-37457, AZL-37460, AZL-79024, AZL-98967, BELL-CVE-2024-24785, BIT-golang-2024-24785, DEBIAN-CVE-2024-24785, GHSA-j6m3-gc37-6r6q, GO-2024-2610, MINI-346h-pr3q-2fcw, MINI-785v-r5hc-wgpw, MINI-cjc2-34qc-q45w, OESA-2025-1072, UBUNTU-CVE-2024-24785

## What is CVE-2024-24785?

CVE-2024-24785 is a medium-severity cross-site scripting vulnerability in Go standard library html/template, published on 5 Mar 2024. Any signed-in user can exploit it over the network, with no action from the victim.

### Official 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.

## Which versions are affected by CVE-2024-24785?

2 open source packages ship an affected version, including golang and stdlib.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `golang` | Bitnami | All versions | 1.21.8, 1.22.1 |
| `stdlib` | Go | All versions | 1.21.8, 1.22.1 |

## How do I fix CVE-2024-24785?

Upgrade golang to a fixed version for your release line: 1.21.8 or 1.22.1.

## Is CVE-2024-24785 being exploited?

There is no known exploitation of CVE-2024-24785 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-24785 and fix it if it is affected.

What it is: CVE-2024-24785 is a medium-severity cross-site scripting vulnerability in Go standard library html/template, published on 5 Mar 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2024-24785 in the wild and no public exploit code.

Affected packages and fixed versions:
- golang (Bitnami): affected all versions; fixed in 1.21.8, 1.22.1
- stdlib (Go): affected all versions; fixed in 1.21.8, 1.22.1

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2024-24785/ (Markdown: https://insights.sbomify.com/CVE-2024-24785/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-24785
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-24785
- OSV: https://osv.dev/vulnerability/CVE-2024-24785

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-24785/
Summaries are generated and may contain mistakes; the official description above is the record.