All vulnerabilities
CVE-2026-108376GHSA-jcjg-gjg5-xp7v

dataclasses-avroschema allows code injection through record names in generated default factories

marcosschroh dataclasses-avroschema
Open in ThreatlineRecord JSON
CVSS
8.8High
ExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 16 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.38%Chance of exploitation activity in the next 30 days, higher than 30% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
Published13 Oct 2026Updated 16 Oct 2026CVE List

What fixes it

No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.

Description

dataclasses-avroschema generates Avro schemas from Python dataclasses, Pydantic models, and Faust Records and generates Python code from Avro schemas. From version 0.47.3 through 0.70.5, FieldRepresentation.get_field_default inserts a schema-controlled referenced record name into the callable position of a generated default_factory lambda without validating it as an Avro name. A crafted record name can become an arbitrary Python expression that executes when an instance of the generated model consumes the field default. Version 0.70.6 fixes the vulnerability by rejecting record names that do not match the Avro name grammar.

Text from CVE List

Affected versions 2

  • dataclasses-avroschemaaffected: >= 0.47.3, < 0.70.6CVE List
  • dataclasses-avroschema, pip<= 0.70.5GitHub

References 4