RCE in Oapi-Codegen
CVE-2026-119027
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.
Vulnerability class: RCE (Remote Code Execution)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/oapi-codegen/oapi-codegen/security/advisories/GHSA-g2vv-83pm-v2hc (vendor-advisory)
- github.com/oapi-codegen/oapi-codegen/pull/2626 (issue-tracking, patch)
- github.com/oapi-codegen/oapi-codegen/commit/068f1bcd16e4724c72d78d6774008a877b8… (patch)
- github.com/oapi-codegen/oapi-codegen/blob/v2.8.0/pkg/codegen/templates/server-u… (technical-description)
- github.com/oapi-codegen/oapi-codegen/blob/v2.5.0/pkg/codegen/templates/server-u… (technical-description)
- github.com/oapi-codegen/oapi-codegen/releases/tag/v2.8.1 (release-notes)
- github.com/oapi-codegen/oapi-codegen/security/advisories/GHSA-rjwr-m7qx-3fjr (related, vendor-advisory)
- www.vulncheck.com/advisories/oapi-codegen-2.5.0-before-2.8.1-code-injection-via… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-119027?
- CVE-2026-119027 is a high-severity vulnerability in Oapi-Codegen, classified under Code Injection. CVSS score: 7.5/10. Published 2026-10-29.
- How severe is CVE-2026-119027?
- High severity. CVSS v3 base score is 7.5 out of 10.