What’s Vulnerable › Vulnerabilities

CVE-2026-54662: swagger-typescript-api vulnerable to code injection via unescaped `servers[0].url` in fetch http-client template

• Severity: high (CVSS 8.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-29 · updated 2026-10-23
• Weakness: CWE-74

Description

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.

Affected products

• acacode swagger-typescript-api: before 13.12.2

References

• https://github.com/acacode/swagger-typescript-api/commit/306d59acb8ffbb00f953f807b97234b21f51d9de
• https://github.com/acacode/swagger-typescript-api/pull/1779
• https://github.com/acacode/swagger-typescript-api/releases/tag/v13.12.2
• https://github.com/acacode/swagger-typescript-api/security/advisories/GHSA-hqj5-cw9f-rx67
• https://github.com/acacode/swagger-typescript-api/security/advisories/GHSA-hqj5-cw9f-rx67

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