CVE-2026-108385 dataclasses-avroschema enum symbols can inject statements through generated member names
Attackers can inject Python statements into generated enum classes via malicious Avro schema symbols, potentially executing code or causing denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-108385?
CVE-2026-108385 is a high-severity code injection vulnerability in marcosschroh dataclasses-avroschema, published on 13 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
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, BaseGenerator.parse_enum and EnumRepresentation.render_symbols use each schema-controlled enum symbol as a generated enum member name after case conversion but without validating it as an identifier. When generator classes are used directly, newlines and punctuation can inject constrained statements into the generated enum class body, allowing namespace modification or preventing the module from loading. Version 0.70.6 fixes the vulnerability by validating every enum symbol as a name.
Weakness: CWE-94
Which versions are affected by CVE-2026-108385?
How do I fix CVE-2026-108385?
No fix has been published for CVE-2026-108385 yet. Limit exposure of the affected software until one is available.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2026-108385 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-108385 exists.
Sources
Also known as GHSA-gw6w-pvv9-2fqc.