Is CVE-2026-119028 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-119028 being exploited in the wild.

How severe is CVE-2026-119028?

High severity, with a CVSS score of 8.8, published 29 October 2026.

Which products and versions are affected?

Oapi-Codegen 2.0.0 before 2.8.1.

Is there a fix for CVE-2026-119028?

Yes: fixed in 2.8.1. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-119028 attacked?

It is attacked over the network.

Am I affected by CVE-2026-119028?

Check whether you run Oapi-Codegen at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-119028: oapi-codegen code injection in enum constant generation

CVE-2026-119028 · Severity: high · CVSS 8.8 · Published 2026-10-29

oapi-codegen is a tool that generates Go code from OpenAPI documents. Attackers can craft malicious OpenAPI files with specially-crafted enum values to inject arbitrary Go code, which executes when the generated code is compiled and imported into a project. This allows remote code execution during the build process.

Technologies: Oapi-Codegen. Vendors: Oapi-Codegen.

Quick answers

Is CVE-2026-119028 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-119028 being exploited in the wild.
How severe is CVE-2026-119028?: High severity, with a CVSS score of 8.8, published 29 October 2026.
Which products and versions are affected?: Oapi-Codegen 2.0.0 before 2.8.1.
Is there a fix for CVE-2026-119028?: Yes: fixed in 2.8.1. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-119028 attacked?: It is attacked over the network.
Am I affected by CVE-2026-119028?: Check whether you run Oapi-Codegen at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: 2.8.1

Technical details

The vulnerability is a template injection in constants.tmpl where unsanitized enum values from an OpenAPI document are directly embedded into generated Go const blocks. An attacker controlling an OpenAPI input can inject non-literal enum entries that close the const block and define a func init() to execute arbitrary code at import time. The fix in v2.8.1 applies proper string escaping (toGoString filter) to enum values.

Affected products

oapi-codegen oapi-codegen 2.0.0 before 2.8.1

Timeline

2026-10-29: disclosed

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.