CVE-2026-119028

Description

oapi-codegen 2.0.0 before 2.8.1 contains a code injection vulnerability that allows attackers to inject Go code by supplying non-literal enum entries in integer, number, or boolean schemas. Attackers controlling an OpenAPI document can craft an enum entry that closes the const block in constants.tmpl and injects a func init(), executing code when the generated package is built and imported.

References

• https://github.com/oapi-codegen/oapi-codegen/blob/v2.0.0/pkg/codegen/templates/constants.tmpl#L12
• https://github.com/oapi-codegen/oapi-codegen/blob/v2.8.0/pkg/codegen/templates/constants.tmpl#L16
• https://github.com/oapi-codegen/oapi-codegen/commit/068f1bcd16e4724c72d78d6774008a877b8297b1
• https://github.com/oapi-codegen/oapi-codegen/pull/2626
• https://github.com/oapi-codegen/oapi-codegen/releases/tag/v2.8.1