Description
swagger-typescript-api generates API clients for Fetch or Axios from OpenAPI specifications. Prior to 13.12.2, src/resolved-swagger-schema.ts getRemoteRequestHeaders forwards --authorizationToken to every URL fetched by fetchRemoteSchemaDocument while warmUpRemoteSchemasCache resolves external $ref URLs, allowing an attacker-controlled OpenAPI spec to exfiltrate the developer or CI bearer token to a cross-origin endpoint. This issue is fixed in version 13.12.2.
References5
- github.com/acacode/swagger-typescript-api/commit/306d59acb8ffbb…
- github.com/acacode/swagger-typescript-api/pull/1779
- github.com/acacode/swagger-typescript-api/releases/tag/v13.12.2
- github.com/acacode/swagger-typescript-api/security/advisories/G…
- github.com/acacode/swagger-typescript-api/security/advisories/G…
Metrics
- CVSS 3.1
-
7.4
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N - EPSS — exploit probability
- 0% percentile: 24 · as of 13 November 2026
- CWE
- CWE-200CWE-201CWE-522CWE-918
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.