High
swagger-typescript-api vulnerable to code injection via unescaped `servers[0].url` in fetch http-client template
Type: advisorySources: OSV
swagger-typescript-api generates API clients for Fetch or Axios from OpenAPI specifications. Prior to 13.12.2, src/code-gen-process.ts createApiConfig copies servers[0].url into apiConfig.baseUrl, and templates/base/http-clients/fetch-http-client.ejs interpolates apiConfig.baseUrl into the generated HttpClient baseUrl field without escaping, allowing an attacker-controlled OpenAPI spec to inject TypeScript static field code that executes when the generated fetch client module is imported. This issue is fixed in version 13.12.2.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-54662
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 04:38 UTC · Revision 1
Source evidence
swagger-typescript-api vulnerable to code injection via unescaped `servers[0].url` in fetch http-client template
core-osv · Original sourcePublished 29 Jul 2026, 14:26 UTC
swagger-typescript-api generates API clients for Fetch or Axios from OpenAPI specifications. Prior to 13.12.2, src/code-gen-process.ts createApiConfig copies servers[0].url into apiConfig.baseUrl, and templates/base/http-clients/fetch-http-client.ejs interpolates apiConfig.baseUrl into the generated HttpClient baseUrl field without escaping, allowing an attacker-controlled OpenAPI spec to inject TypeScript static field code that executes when the generated fetch client module is imported. This issue is fixed in version 13.12.2.
osv:CVE-2026-54662
Complete source record
{
"id": "c8d68dd91ad0a704672ac04b64ed88b33598c6fa30d841ff41eb9da8577f8d50",
"url": "https://osv.dev/vulnerability/CVE-2026-54662",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "swagger-typescript-api vulnerable to code injection via unescaped `servers[0].url` in fetch http-client template",
"summary": "swagger-typescript-api generates API clients for Fetch or Axios from OpenAPI specifications. Prior to 13.12.2, src/code-gen-process.ts createApiConfig copies servers[0].url into apiConfig.baseUrl, and templates/base/http-clients/fetch-http-client.ejs interpolates apiConfig.baseUrl into the generated HttpClient baseUrl field without escaping, allowing an attacker-controlled OpenAPI spec to inject TypeScript static field code that executes when the generated fetch client module is imported. This issue is fixed in version 13.12.2.",
"evidence": "osv:CVE-2026-54662",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2026-54662",
"aliases": [
"CVE-2026-54662",
"GHSA-hqj5-cw9f-rx67"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/acacode/swagger-typescript-api",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "cc3e4d1598dfd990b8d862b88cd64ae1ca7653e3"
},
{
"fixed": "306d59acb8ffbb00f953f807b97234b21f51d9de"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "13.12.2"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"fixed": "306d59acb8ffbb00f953f807b97234b21f51d9de"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "cc3e4d1598dfd990b8d862b88cd64ae1ca7653e3"
}
],
"source": "REFERENCES_TAG",
"original_tag": "v13.12.2"
}
]
}
}
],
"versions": [
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"v13.12.0",
"v13.11.2",
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"13.0.0",
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"3.1.2",
"3.1.1",
"3.1.0",
"3.0.0",
"2.0.0",
"1.12.0",
"1.11.0",
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"1.4.0",
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54662.json"
}
}
],
"modified": "2026-10-28T02:30:25.672006152Z",
"provider": "osv",
"references": [
"https://github.com/acacode/swagger-typescript-api/releases/tag/v13.12.2",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54662.json",
"https://github.com/acacode/swagger-typescript-api/security/advisories/GHSA-hqj5-cw9f-rx67",
"https://nvd.nist.gov/vuln/detail/CVE-2026-54662",
"https://github.com/acacode/swagger-typescript-api/commit/306d59acb8ffbb00f953f807b97234b21f51d9de",
"https://github.com/acacode/swagger-typescript-api/pull/1779"
],
"provider_metadata": {
"cwe_ids": [
"CWE-1336",
"CWE-74",
"CWE-94"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54662.json"
}
},
"related_cves": [
{
"value": "CVE-2026-54662",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 492502,
"published_at": "2026-07-29T14:26:15.992+00:00"
}