CVE-2026-119027 (GCVE-0-2026-119027)
Vulnerability from cvelistv5
Published
2026-10-29 11:36
Modified
2026-10-29 11:36
Severity ?
7.7 (High) - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.5 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
VLAI Severity ?
EPSS score ?
CWE
- CWE-94 - Improper Control of Generation of Code ('Code Injection')
Summary
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.
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| oapi-codegen | oapi-codegen |
Version: 2.5.0 ≤ |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"packageURL": "pkg:golang/github.com/oapi-codegen/oapi-codegen/v2",
"product": "oapi-codegen",
"vendor": "oapi-codegen",
"versions": [
{
"lessThan": "2.8.1",
"status": "affected",
"version": "2.5.0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Zachariah Mithani (AploSec)"
}
],
"datePublic": "2026-10-24T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "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."
}
],
"metrics": [
{
"cvssV4_0": {
"attackComplexity": "LOW",
"attackRequirements": "PRESENT",
"attackVector": "NETWORK",
"baseScore": 7.7,
"baseSeverity": "HIGH",
"privilegesRequired": "NONE",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "PASSIVE",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH"
},
"format": "CVSS"
},
{
"cvssV3_1": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-94",
"description": "Improper Control of Generation of Code (\u0027Code Injection\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-29T11:36:34.029Z",
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck"
},
"references": [
{
"name": "GitHub Security Advisory (GHSA-g2vv-83pm-v2hc)",
"tags": [
"vendor-advisory"
],
"url": "https://github.com/oapi-codegen/oapi-codegen/security/advisories/GHSA-g2vv-83pm-v2hc"
},
{
"name": "Pull Request #2626",
"tags": [
"patch",
"issue-tracking"
],
"url": "https://github.com/oapi-codegen/oapi-codegen/pull/2626"
},
{
"name": "Patch Commit",
"tags": [
"patch"
],
"url": "https://github.com/oapi-codegen/oapi-codegen/commit/068f1bcd16e4724c72d78d6774008a877b8297b1"
},
{
"tags": [
"technical-description"
],
"url": "https://github.com/oapi-codegen/oapi-codegen/blob/v2.8.0/pkg/codegen/templates/server-urls.tmpl#L5-L7"
},
{
"tags": [
"technical-description"
],
"url": "https://github.com/oapi-codegen/oapi-codegen/blob/v2.5.0/pkg/codegen/templates/server-urls.tmpl#L4-L5"
},
{
"name": "oapi-codegen v2.8.1 Release Notes",
"tags": [
"release-notes"
],
"url": "https://github.com/oapi-codegen/oapi-codegen/releases/tag/v2.8.1"
},
{
"name": "GitHub Security Advisory (GHSA-rjwr-m7qx-3fjr)",
"tags": [
"related",
"vendor-advisory"
],
"url": "https://github.com/oapi-codegen/oapi-codegen/security/advisories/GHSA-rjwr-m7qx-3fjr"
},
{
"name": "VulnCheck Advisory: oapi-codegen 2.5.0 before 2.8.1 Code Injection via servers[].x-go-name Extension",
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/oapi-codegen-2.5.0-before-2.8.1-code-injection-via-servers-x-go-name-extension"
}
],
"title": "oapi-codegen 2.5.0 before 2.8.1 Code Injection via servers[].x-go-name Extension",
"x_generator": {
"engine": "vulncheck-endgame"
}
}
},
"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2026-119027",
"datePublished": "2026-10-29T11:36:34.029Z",
"dateReserved": "2026-10-29T11:32:04.895Z",
"dateUpdated": "2026-10-29T11:36:34.029Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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