---
id: CVE-2026-108551
title: >-
  openapi-typescript-codegen through 0.31.0 contains a code injection
  vulnerability that allows attackers controlling an OpenAPI document to inject
  JavaScript by supplying unescaped values interpolated into single-quoted
  string literals
summary: >-
  openapi-typescript-codegen through 0.31.0 contains a code injection
  vulnerability that allows attackers controlling an OpenAPI document to inject
  JavaScript by supplying unescaped values interpolated into single-quoted
  string literals. A…
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-94
published: '2026-10-10'
updated: '2026-10-10'
sourceUpdated: '2026-10-10T15:16:58.273'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-108551'
references:
  - url: 'https://github.com/ferdikoomen/openapi-typescript-codegen'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/ferdikoomen/openapi-typescript-codegen/blob/v0.31.0/src/templates/core/OpenAPI.hbs#L20-L23
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/ferdikoomen/openapi-typescript-codegen/blob/v0.31.0/src/templates/exportService.hbs#L89-L110
    label: disclosure@vulncheck.com
  - url: 'https://github.com/ferdikoomen/openapi-typescript-codegen/issues/2809'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/openapi-typescript-codegen-through-0.31.0-code-injection-via-handlebars-templates
    label: disclosure@vulncheck.com
tags:
  - nvd
ingestedAt: '2026-10-10T15:25:58.088Z'
---

## Overview

openapi-typescript-codegen through 0.31.0 contains a code injection vulnerability that allows attackers controlling an OpenAPI document to inject JavaScript by supplying unescaped values interpolated into single-quoted string literals. Attackers can embed a single quote in path keys, parameter names, servers[0].url, or info.version to execute arbitrary JavaScript when generated clients are imported or service methods called.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.