swagger-typescript-api vulnerable to authorization-token exfiltration via spec `$ref`
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-200.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| acacode | swagger-typescript-api | before 13.12.2 | 13.12.2 | Patch available | CNA |
| — | swagger-typescript-api (npm) | before 13.12.2 | 13.12.2 | Patch available | GHSA-h754-fxp7-88wx |
- swagger-typescript-api Vendoracacode Affected before 13.12.2 Fixed in 13.12.2 Patch available CNA
- swagger-typescript-api (npm) Vendor— Affected before 13.12.2 Fixed in 13.12.2 Patch available GHSA-h754-fxp7-88wx
Remediation
- Fix · CNA swagger-typescript-api (acacode) Fixed in 13.12.2
- Fix · GHSA-h754-fxp7-88wx swagger-typescript-api (npm) Fixed in 13.12.2 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-54660
- 2026-10-03 Alias added: GHSA-h754-fxp7-88wx
References
Other 5
- https://github.com/acacode/swagger-typescript-api/security/advisories/GHSA-h754-fxp7-88wx
- https://github.com/acacode/swagger-typescript-api/pull/1779
- https://github.com/acacode/swagger-typescript-api/commit/306d59acb8ffbb00f953f807b97234b21f51d9de
- https://github.com/acacode/swagger-typescript-api/releases/tag/v13.12.2
- https://github.com/acacode/swagger-typescript-api
More acacode vulnerabilities
- TI-2026-39492 swagger-typescript-api vulnerable to code injection via unescaped OpenAPI path strings in generated method bodies CVSS 3.1HIGH 8.3
- TI-2026-39490 swagger-typescript-api vulnerable to code injection via unescaped enum string values CVSS 3.1HIGH 8.3
- TI-2026-39488 swagger-typescript-api vulnerable to code injection via unescaped `servers[0].url` in fetch http-client template CVSS 3.1HIGH 8.3
- TI-2026-39489 swagger-typescript-api vulnerable to Server-Side Request Forgery via spec `$ref` CVSS 3.1MEDIUM 6.1
- TI-2026-39487 swagger-typescript-api vulnerable to code injection via unescaped `servers[0].url` in axios http-client template CVSS 3.1HIGH 8.3
Sources
- CVE-2026-54660 · CVE Program
- CVE-2026-54660 · NVD
- FIRST EPSS
- GHSA-h754-fxp7-88wx · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences