RCE in Marcosschroh Dataclasses-Avroschema
CVE-2026-108381
dataclasses-avroschema generates Avro schemas from Python dataclasses, Pydantic models, and Faust Records and generates Python code from Avro schemas. From version 0.44.0 through 0.70.5, the Pydantic and AvroDantic model generators insert a schema field's pydantic-class value after pydantic. in a generated field annotation without safely restricting the expression. Because annotations are evaluated when the generated module is imported, a crafted value can execute arbitrary Python code. Version 0.70.6 fixes the vulnerability by restricting the value to a bare name or a call to a bare name with literal arguments.
Vulnerability class: RCE (Remote Code Execution)
Published .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Marcosschroh Dataclasses-Avroschema — versions >= 0.44.0, < 0.70.6
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-108381?
- CVE-2026-108381 is a high-severity vulnerability in Marcosschroh Dataclasses-Avroschema, classified under Code Injection. CVSS score: 8.8/10. Published 2026-10-13.
- How severe is CVE-2026-108381?
- High severity. CVSS v3 base score is 8.8 out of 10.