dataclasses-avroschema allows code injection through generated Meta.schema_name

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-108377
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-13 18:17:16 UTC
Updated2026-10-13 18:17:16 UTC
Descriptiondataclasses-avroschema generates Avro schemas from Python dataclasses, Pydantic models, and Faust Records and generates Python code from Avro schemas. From version 0.62.3 through 0.70.5, ClassRepresentation.render_metaclass inserts a schema-controlled Avro record name into the quoted Meta.schema_name field of generated Python source without escaping it. A crafted name can terminate the string literal and inject statements into the generated class body, which execute when the generated module is imported. Version 0.70.6 fixes the vulnerability by escaping schema values rendered into generated string literals.

Risk And Classification

Primary CVSS: v3.1 8.8 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Problem Types: CWE-94 | CWE-94 CWE-94: Improper Control of Generation of Code ('Code Injection')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary8.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
3.1CNADECLARED8.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Marcosschroh Dataclasses-avroschema affected >= 0.62.3, < 0.70.6 Not specified

References

ReferenceSourceLinkTags
github.com/marcosschroh/dataclasses-avroschema/commit/919d3e07c8938369cf... [email protected] github.com
github.com/marcosschroh/dataclasses-avroschema/releases/tag/0.70.6 [email protected] github.com
github.com/marcosschroh/dataclasses-avroschema/commit/429f3d705d2d04c0c6... [email protected] github.com
github.com/marcosschroh/dataclasses-avroschema/security/advisories/GHSA-... 134c704f-9b21-4f2e-91b3-4a467353bcc0 github.com
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