CVE-2026-54662

HIGH 8.3EPSS 0.3%

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.

CVSS v3.1: 8.3 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
CVSS v3.1: 8.3 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
EPSS: 0.27% chance of exploitation in the next 30 days, 19th percentile
Published: 2026-07-29

Proof-of-concept exploits (1)

advisories/GHSA-hqj5-cw9f-rx67

References

CVE Record
NVD entry

CVE-2026-54662

Proof-of-concept exploits (1)

References

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