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CVE-2026-108551— openapi-typescript-codegen through 0.31.0 Code Injection via Handlebars Templates

Quick assessment

Affected
ferdikoomen openapi-typescript-codegen
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

openapi-typescript-codegen（0.31.0 及更早版本）存在代码注入漏洞，攻击者可通过操控 OpenAPI 文档，在插值到单引号字符串字面量中的值未转义的情况下注入 JavaScript 代码。攻击者可在路径键、参数名、servers[0].url 或 info.version 中嵌入单引号，从而在导入生成的客户端或调用服务方法时执行任意 JavaScript 代码。

CVSS 9.8 · Critical EPSS 0.41% · P34

Affected Version Matrix 1

VendorProduct Version RangeStatus
ferdikoomen openapi-typescript-codegen ≤ 0.31.0 affected
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I. Basic Information for CVE-2026-108551

Vulnerability Information
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Vulnerability Title
openapi-typescript-codegen through 0.31.0 Code Injection via Handlebars Templates
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
对生成代码的控制不恰当(代码注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
ferdikoomen openapi-typescript-codegen 0 ~ 0.31.0 -

II. Public POCs for CVE-2026-108551

# POC Description Source Link Shenlong Link
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III. Intelligence Information for CVE-2026-108551

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Patches & Fixes for CVE-2026-108551 (2)

Vendor Advisories for CVE-2026-108551 (1)

Proof of Concept for CVE-2026-108551 (1)

IV. Related Vulnerabilities

Same weakness: CWE-94

V. Comments for CVE-2026-108551

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