CVE-2026-108380 dataclasses-avroschema - Template Injection

dataclasses-avroschema 0.65.9 through 0.70.5 contains a template injection caused by unescaped schema field doc values in PydanticFieldRepresentation.add_field_properties, letting attackers execute arbitrary Python code during model generation, exploit requires crafted schema documentation.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.45% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Template Injection
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
13 October 2026
Updated
15 October 2026
Weakness
CWE-94

Vendor fix

Upgrade to version 0.70.6 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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