Vulnerability · Published Jul 29, 2026 · Assigned by GitHub_M

CVE-2026-54661swagger-typescript-api vulnerable to code injection via unescaped `servers[0].url` in axios http-client template

High 8.3

In plain English

A high-severity injection in swagger-typescript-api from acacode. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 41% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.3High

Exploit odds (30 days)0.5%top 58.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	swagger-typescript-api	13.12.2	GHSA-38c3-wv3c-v3xj

Affected products (as reported)

Vendor	Product	Versions
acacode	swagger-typescript-api	< 13.12.2

Weakness: CWE-74, CWE-94, CWE-1336 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

References

https://github.com/acacode/swagger-typescript-api/security/advisories/GHSA-38c3-wv3c-v3xj x_refsource_CONFIRM
https://github.com/acacode/swagger-typescript-api/pull/1779 x_refsource_MISC
https://github.com/acacode/swagger-typescript-api/commit/306d59acb8ffbb00f953f807b97234b21f51d9de x_refsource_MISC
https://github.com/acacode/swagger-typescript-api/releases/tag/v13.12.2 x_refsource_MISC