CVE-2026-119027
oapi-codegen 2.5.0 before 2.8.1 Code Injection via servers[].x-go-name Extension
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.
INFO
Published Date :
Oct. 29, 2026, 12:17 p.m.
Last Modified :
Oct. 29, 2026, 6:17 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 3.1 | HIGH | MITRE-CVE | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 4.0 | HIGH | 83251b91-4cc7-4094-a5c7-464a1b83ea10 | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Update oapi-codegen to version 2.8.1 or later.
- Ensure OpenAPI documents are properly validated.
- Review generated code for unexpected functions.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-119027.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-119027 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-119027
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-119027 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-119027 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Oct. 29, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-119027', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-10-29T15:37:44.678832Z'} -
New CVE Received by [email protected]
Oct. 29, 2026
Action Type Old Value New Value Added 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. Added CVSS V4.0 AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Added CVSS V3.1 AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H Added CWE CWE-94 Added Affected New affected value received. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2026/119xxx/CVE-2026-119027.json">CVE-2026-119027</a> Added Reference https://github.com/oapi-codegen/oapi-codegen/blob/v2.5.0/pkg/codegen/templates/server-urls.tmpl#L4-L5 Added Reference https://github.com/oapi-codegen/oapi-codegen/blob/v2.8.0/pkg/codegen/templates/server-urls.tmpl#L5-L7 Added Reference https://github.com/oapi-codegen/oapi-codegen/commit/068f1bcd16e4724c72d78d6774008a877b8297b1 Added Reference https://github.com/oapi-codegen/oapi-codegen/pull/2626 Added Reference https://github.com/oapi-codegen/oapi-codegen/releases/tag/v2.8.1 Added Reference https://github.com/oapi-codegen/oapi-codegen/security/advisories/GHSA-g2vv-83pm-v2hc Added Reference https://github.com/oapi-codegen/oapi-codegen/security/advisories/GHSA-rjwr-m7qx-3fjr Added Reference https://www.vulncheck.com/advisories/oapi-codegen-2.5.0-before-2.8.1-code-injection-via-servers-x-go-name-extension