---
title: "CVE-2026-108381: dataclasses-avroschema - Remote Code Execution"
description: "dataclasses-avroschema 0.44.0 through 0.70.5 contains a code injection vulnerability caused by unsafe evaluation of pydantic-class values in generated field annotations, letting attackers execute arbitrary Python code during module import, exploit requires crafted schema field values."
url: https://panop.io/threat-heartbeat/CVE-2026-108381/
---

# CVE-2026-108381 dataclasses-avroschema - Remote Code Execution

dataclasses-avroschema 0.44.0 through 0.70.5 contains a code injection vulnerability caused by unsafe evaluation of pydantic-class values in generated field annotations, letting attackers execute arbitrary Python code during module import, exploit requires crafted schema field values.

CVSS base score 8.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.30% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-108381)

## Details

Type

Remote Code Execution

Impact

Remote Code Execution

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Published

13 October 2026

Updated

15 October 2026

Weakness

[CWE-94](https://cwe.mitre.org/data/definitions/94.html)

## Vendor fix

Upgrade to version 0.70.6 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-108381](https://nvd.nist.gov/vuln/detail/CVE-2026-108381)
- [https://github.com/marcosschroh/dataclasses-avroschema/commit/429f3d705d2d04c0c65e2ef832daed5ff91318fc](https://github.com/marcosschroh/dataclasses-avroschema/commit/429f3d705d2d04c0c65e2ef832daed5ff91318fc)
- [https://github.com/marcosschroh/dataclasses-avroschema/pull/358](https://github.com/marcosschroh/dataclasses-avroschema/pull/358)
- [https://github.com/marcosschroh/dataclasses-avroschema/releases/tag/0.70.6](https://github.com/marcosschroh/dataclasses-avroschema/releases/tag/0.70.6)
- [https://github.com/marcosschroh/dataclasses-avroschema/security/advisories/GHSA-4jmx-9m83-vxx8](https://github.com/marcosschroh/dataclasses-avroschema/security/advisories/GHSA-4jmx-9m83-vxx8)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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