CVE-2026-108378: high-severity vulnerability in marcosschroh dataclasses-avroschema
dataclasses-avroschema record documentation can terminate generated class docstrings
Published · Updated
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.8epss 0.3%
exploitation probability
0.3%top 72% of all CVEs
observed exploitation
nono source reports it
dataclasses-avroschema generates Avro schemas from Python dataclasses, Pydantic models, and Faust Records and generates Python code from Avro schemas. From version 0.40.0 through 0.70.5, ClassRepresentation.render_docstring copies a schema record's doc value into a generated triple-double-quoted class docstring without escaping quotes or backslashes. A crafted triple-quote sequence can close the docstring and inject statements into the generated class body, while a trailing backslash can escape the generated closing delimiter, allowing Python code execution during module import. Version 0.70.6 fixes the vulnerability by escaping quotes, backslashes, and unsafe control characters before rendering docstrings.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected products
marcosschroh · dataclasses-avroschemaRelated CVEs — marcosschroh dataclasses-avroschema
In the same product, most dangerous first.
CVE-2026-108376HIGHdataclasses-avroschema allows code injection through record names in generated default factoriesEPSS 0.5%CVE-2026-108375HIGHdataclasses-avroschema allows code injection through generated field-default literalsEPSS 0.5%CVE-2026-108380HIGHdataclasses-avroschema field documentation allows code injection in generated Pydantic descriptionsEPSS 0.4%CVE-2026-108381HIGHdataclasses-avroschema pydantic-class metadata allows code injection in generated annotationsEPSS 0.4%CVE-2026-108377HIGHdataclasses-avroschema allows code injection through generated Meta.schema_nameEPSS 0.4%CVE-2026-108385HIGHdataclasses-avroschema enum symbols can inject statements through generated member namesEPSS 0.4%