Is CVE-2026-108384 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-108384 being exploited in the wild.

How severe is CVE-2026-108384?

High severity, with a CVSS score of 8.8, published 13 October 2026.

Which products and versions are affected?

Marcosschroh Dataclasses-Avroschema 0.38.0 through 0.70.5.

How is CVE-2026-108384 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-108384?

Check whether you run Marcosschroh Dataclasses-Avroschema at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-108384: dataclasses-avroschema code injection in schema parsing

CVE-2026-108384 · Severity: high · CVSS 8.8 · Published 2026-10-13

dataclasses-avroschema is a Python library that generates code from Avro schemas. When processing a crafted schema with malicious values in the aliases field, the library generates Python code that executes arbitrary code when imported, allowing an attacker to run malicious code on systems that process untrusted schemas from registries or external sources.

Technologies: Marcosschroh Dataclasses-Avroschema. Vendors: Marcosschroh.

Quick answers

Is CVE-2026-108384 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-108384 being exploited in the wild.
How severe is CVE-2026-108384?: High severity, with a CVSS score of 8.8, published 13 October 2026.
Which products and versions are affected?: Marcosschroh Dataclasses-Avroschema 0.38.0 through 0.70.5.
Is there a fix for CVE-2026-108384?: Yes: fixed in 0.70.6. Until then: Restrict access to schema registries and validate that only trusted schemas are processed by the library. Do not generate code from schemas obtained from untrusted sources until upgraded.</anigation> <parameter name="timeline">[{"kind": "disclosed", "at": "2026-10-13"}, {"kind": "patched", "at": "2026-08-18"}] Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-108384 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-108384?: Check whether you run Marcosschroh Dataclasses-Avroschema at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: 0.70.6

Restrict access to schema registries and validate that only trusted schemas are processed by the library. Do not generate code from schemas obtained from untrusted sources until upgraded.</anigation> <parameter name="timeline">[{"kind": "disclosed", "at": "2026-10-13"}, {"kind": "patched", "at": "2026-08-18"}]

Technical details

The BaseGenerator.parse_fixed method interpolates the fixed type's aliases value directly into generated Python code without proper escaping or validation. When aliases is a bare string instead of a list, it is emitted as an unquoted Python expression that gets evaluated during module import. This affects code generation from Avro schemas, particularly in schema parsing pipelines where untrusted schemas may be processed.

Affected products

marcosschroh dataclasses-avroschema 0.38.0 through 0.70.5

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.