CVE-2026-119028
oapi-codegen 2.0.0 before 2.8.1 Code Injection via Non-String Enum Values
CVSS Score
8.8
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-94 |
| Vendor | oapi-codegen |
| Product | oapi-codegen |
| Published | Oct 29, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
oapi-codegen / oapi-codegen
2.0.0 < 2.8.1
References
github.com: https://github.com/oapi-codegen/oapi-codegen/security/advisories/GHSA-g2vv-83pm-v2hc github.com: https://github.com/oapi-codegen/oapi-codegen/pull/2626 github.com: https://github.com/oapi-codegen/oapi-codegen/commit/068f1bcd16e4724c72d78d6774008a877b8297b1 github.com: https://github.com/oapi-codegen/oapi-codegen/blob/v2.8.0/pkg/codegen/templates/constants.tmpl#L16 github.com: https://github.com/oapi-codegen/oapi-codegen/blob/v2.0.0/pkg/codegen/templates/constants.tmpl#L12 github.com: https://github.com/oapi-codegen/oapi-codegen/releases/tag/v2.8.1 github.com: https://github.com/oapi-codegen/oapi-codegen/security/advisories/GHSA-xrqw-w576-xgj2 vulncheck.com: https://www.vulncheck.com/advisories/oapi-codegen-2.0.0-before-2.8.1-code-injection-via-non-string-enum-values
Credits
Zachariah Mithani (AploSec)