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TI-2026-71968 Aliases CVE-2026-108382

Code injection in dataclasses-avroschema through enum symbol literals

Priority HIGH 73CWE-94Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-94.

Summary

dataclasses-avroschema from 0.38.0 before 0.70.6 is affected. EnumRepresentation.render_symbols places schema-controlled enum symbols between double quotes without escaping them, which is a code injection flaw (CWE-94). When generator classes are used directly, an attacker who controls an enum symbol can inject Python code that runs when the generated module is imported, and user interaction is required.

Written with Claude Haiku 5.5 from the sources below · 2026-10-27

Description from the CNA

dataclasses-avroschema generates Avro schemas from Python dataclasses, Pydantic models, and Faust Records and generates Python code from Avro schemas. From version 0.38.0 through 0.70.5, EnumRepresentation.render_symbols concatenates each schema-controlled enum symbol between double quotes in a generated enum assignment. When generator classes are used directly, a quote can terminate the string literal and inject arbitrary Python code into the enum class body, which executes when the generated module is imported. Version 0.70.6 fixes the vulnerability by escaping enum symbol values before rendering them.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00365 30th percentileScored 2026-11-07
Fix Fixed dataclasses-avroschema (marcosschroh): 0.70.6

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
marcosschrohdataclasses-avroschema0.38.0 to before 0.70.60.70.6Patch availableCNA
  • dataclasses-avroschema Vendormarcosschroh Affected 0.38.0 to before 0.70.6 Fixed in 0.70.6 Patch available CNA

Remediation

Upgrade dataclasses-avroschema to version 0.70.6, which escapes enum symbol values before rendering them.

Written with Claude Haiku 5.5 from the sources below · 2026-10-27

  • Fix · CNA dataclasses-avroschema (marcosschroh) Fixed in 0.70.6

Timeline

  1. 2026-10-13 Threatist record created from CVE-2026-108382

References

Other 3

  • TI-2026-71971 Code injection in dataclasses-avroschema enum generation CVSS 3.1HIGH 8.8
  • TI-2026-71967 Code injection in dataclasses-avroschema Pydantic model generation CVSS 3.1HIGH 8.8
  • TI-2026-71966 Code injection in dataclasses-avroschema Pydantic field documentation CVSS 3.1HIGH 8.8
  • TI-2026-71964 Code injection in dataclasses-avroschema generated class docstrings CVSS 3.1HIGH 8.8
  • TI-2026-71963 Code injection in dataclasses-avroschema through Meta.schema_name CVSS 3.1HIGH 8.8
  • TI-2026-71962 Code injection in dataclasses-avroschema via Avro record names CVSS 3.1HIGH 8.8
See all 10 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences