# CVE-2026-54654: `datamodel-code-generator` vulnerable to code injection via unescaped carriage return in `--extra-template-data` `comment` field

> Attackers can inject Python code into generated models via unescaped carriage returns in template data, leading to code execution upon import.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 28 Jul 2026
- **Updated:** 29 Jul 2026
- **Also known as:** GHSA-wjv6-jcfj-mf9r, MINI-rfqh-p392-g9cv, PYSEC-2026-3566

## What is CVE-2026-54654?

CVE-2026-54654 is a high-severity code injection vulnerability in koxudaxi datamodel-code-generator, published on 28 Jul 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

datamodel-code-generator generates Python data models from schema definitions. From 0.14.1 until 0.60.2, the --extra-template-data comment field is rendered into Python comments in src/datamodel_code_generator/model/template/TypeAliasAnnotation.jinja2, src/datamodel_code_generator/model/template/TypedDict.jinja2, src/datamodel_code_generator/model/template/dataclass.jinja2, src/datamodel_code_generator/model/template/msgspec.Struct.jinja2, src/datamodel_code_generator/model/template/pydantic/BaseModel.jinja2, and src/datamodel_code_generator/model/template/pydantic_v2/BaseModel.jinja2 without neutralizing carriage returns in Python # comments, allowing an attacker-controlled comment value to inject Python code into generated models that runs when imported. This issue is fixed in version 0.60.2.

Weakness: CWE-94 (Improper Control of Generation of Code), CWE-1336 (Improper Neutralization of Special Elements Used in a Template Engine)

## Which versions are affected by CVE-2026-54654?

3 open source packages ship an affected version, including datamodel-code-generator.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `datamodel-code-generator` | PyPI | From 0.14.1 | 0.60.2 |
| `datamodel-code-generator` | PyPI | From 0.14.1 | 0.60.2 |
| `datamodel-code-generator` | PyPI | From 0.14.1 | 0.60.2 |

## How do I fix CVE-2026-54654?

Upgrade datamodel-code-generator to 0.60.2 or later.

## Is CVE-2026-54654 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-54654 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-54654 and fix it if it is affected.

What it is: CVE-2026-54654 is a high-severity code injection vulnerability in koxudaxi datamodel-code-generator, published on 28 Jul 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-54654 exists.

Affected packages and fixed versions:
- datamodel-code-generator (PyPI): affected from 0.14.1; fixed in 0.60.2
- datamodel-code-generator (PyPI): affected from 0.14.1; fixed in 0.60.2
- datamodel-code-generator (PyPI): affected from 0.14.1; fixed in 0.60.2

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-2026-54654/ (Markdown: https://insights.sbomify.com/CVE-2026-54654/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-54654
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-54654
- OSV: https://osv.dev/vulnerability/CVE-2026-54654

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-54654/
Summaries are generated and may contain mistakes; the official description above is the record.