High 8.8Published Oct 13, 2026

CVE-2026-108375dataclasses-avroschema allows code injection through generated field-default literals

Updated under an hour ago (2026-10-19 09:10 UTC)

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It affects marcosschroh dataclasses-avroschema. Add what you run to find out whether that includes you.

EPSS puts the chance of exploitation in the next 30 days at 0.46%, higher than 39% of scored CVEs.

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Every CVE for marcosschroh dataclasses-avroschema

Exploited in the last 30 days

dataclasses-avroschema generates Avro schemas from Python dataclasses, Pydantic models, and Faust Records and generates Python code from Avro schemas. From version 0.38.0 through 0.70.5, FieldRepresentation.get_field_default inserts schema-controlled string, UUID, bytes, and fixed field defaults into quoted literals in generated Python source without escaping them. A crafted default can terminate the literal and inject statements into the generated module, which execute when the module is imported. Version 0.70.6 fixes the vulnerability by escaping schema values rendered into generated string literals.

CVSS: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-94
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): 0.46% (percentile 39)
Assigned by: GitHub_M
NVD analysis: Awaiting Analysis
Record last updated: Oct 13, 2026
First seen by InfoSec Signals: Oct 13, 2026

Affected products

Affected products

marcosschroh dataclasses-avroschema marcosschroh:dataclasses_avroschema (from the name)	from 0.38.0, < 0.70.6	CNA record

References

https://github.com/marcosschroh/dataclasses-avroschema/security/advisories/GHSA-9h8h-264x-jcg2x-refsource-confirm
https://github.com/marcosschroh/dataclasses-avroschema/commit/01e6d5e15ab0ff69faac39a340d21b85da1e852fx-refsource-misc
https://github.com/marcosschroh/dataclasses-avroschema/releases/tag/0.70.6x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.