CVE-2026-54661: swagger-typescript-api generates API clients for Fetch or Axios from an OpenAPI Specification

Routine

HIGH 8.3

CVE-2026-54661 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 an OpenAPI Specification. Prior to 13.12.2, templates/base/http-clients/axios-http-client.ejs interpolates servers[0].url from src/code-gen-process.ts into the HttpClient constructor without escaping, allowing an attacker-controlled OpenAPI spec to inject code that executes when new HttpClient() or new Api() is constructed. This issue is fixed in version 13.12.2.

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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