CVE-2026-54662: swagger-typescript-api generates API clients for Fetch or Axios from OpenAPI specifications

Routine

HIGH 8.3

CVE-2026-54662 is a high-severity flaw (CVSS 8.3) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

High severity

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	8.3 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.5% (top 60%)
CISA exploited list	No
Weakness	CWE-74, CWE-94, CWE-1336
Published	2026-07-29
Last modified	2026-10-23

Publisher (CNA): GitHub, Inc.

Timeline

2026-07-29 15:16 UTCPublished CVE record published
2026-10-23 23:10 UTCUpdated Record last modified

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Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

References

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