Vulnerability · Published Oct 29, 2026 · Assigned by VulnCheck
CVE-2026-119027oapi-codegen 2.5.0 before 2.8.1 Code Injection via servers[].x-go-name Extension
High 7.5
In plain English
A high-severity code injection in oapi-codegen from oapi-codegen. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities).
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.4%top 66.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
oapi-codegen 2.5.0 before 2.8.1 contains a code injection vulnerability that allows attackers to inject Go code by supplying a crafted servers[].x-go-name value emitted unescaped by the server-urls template. Attackers who control an OpenAPI document can define an injected func init() that executes when the victim builds and imports the generated package.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| oapi-codegen | oapi-codegen | 2.5.0 – before 2.8.1 |
Weakness: CWE-94 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
References
- GitHub Security Advisory (GHSA-g2vv-83pm-v2hc) vendor-advisory
- Pull Request #2626 patch, issue-tracking
- Patch Commit patch
- https://github.com/oapi-codegen/oapi-codegen/blob/v2.8.0/pkg/codegen/templates/server-urls.tmpl#L5-L7 technical-description
- https://github.com/oapi-codegen/oapi-codegen/blob/v2.5.0/pkg/codegen/templates/server-urls.tmpl#L4-L5 technical-description
- oapi-codegen v2.8.1 Release Notes release-notes
- GitHub Security Advisory (GHSA-rjwr-m7qx-3fjr) related, vendor-advisory
- VulnCheck Advisory: oapi-codegen 2.5.0 before 2.8.1 Code Injection via servers[].x-go-name Extension third-party-advisory