Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-108376
marcosschroh dataclasses-avroschema — dataclasses-avroschema allows code injection through record names in generated default factories
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L N R U H H H 8.8 .0038 30.2 —
AFFECTED
Product Versions Fixed
dataclasses-avroschema >= 0.47.3, < 0.70.6 – —
TIMELINE
Oct 9 Reserved by GitHub_M
Oct 13 Published (CNA: GitHub_M)
Oct 16 EXPLOIT PUBLISHED — CVE-2026-108376 (marcosschroh dataclasses-avroschema). Public exploit reference added.
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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| October 9, 2026 | Reserved | Reserved by GitHub_M |
| October 13, 2026 | Published | Published (CNA: GitHub_M) |
| October 16, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-108376 (marcosschroh dataclasses-avroschema). Public exploit reference added. |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| marcosschroh | dataclasses-avroschema | — | >= 0.47.3, < 0.70.6 | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-108376 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
