CVE-2026-42039— Axios: unbounded recursion in toFormData causes DoS via deeply nested request data
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I. Basic Information for CVE-2026-42039
Vulnerability Information
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Vulnerability Title
Axios: unbounded recursion in toFormData causes DoS via deeply nested request data
Source: NVD (National Vulnerability Database)
Vulnerability Description
Axios is a promise based HTTP client for the browser and Node.js. Prior to 1.15.1 and 0.31.1, toFormData recursively walks nested objects with no depth limit, so a deeply nested value passed as request data crashes the Node.js process with a RangeError. This vulnerability is fixed in 1.15.1 and 0.31.1.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
未经控制的递归
Source: NVD (National Vulnerability Database)
Vulnerability Title
Axios 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Axios是Axios开源的一款基于Promise（异步编程的一种解决方案）的HTTP客户端。 Axios 1.15.1之前版本和0.31.1之前版本存在安全漏洞，该漏洞源于toFormData递归遍历嵌套对象无深度限制，导致深度嵌套值作为请求数据时崩溃Node.js进程。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2026-42039
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Same Patch Batch · axios · 2026-04-24 · 12 CVEs total
| CVE-2026-42033 | 7.4 HIGH | Axios: Prototype Pollution Gadgets - Response Tampering, Data Exfiltration, and Request Hi |
| CVE-2026-42035 | 7.4 HIGH | Axios: Header Injection via Prototype Pollution |
| CVE-2026-42043 | 7.2 HIGH | Axios: Incomplete Fix for CVE-2025-62718 — NO_PROXY Protection Bypassed via RFC 1122 Loop |
| CVE-2026-42038 | 6.8 MEDIUM | Axios: no_proxy bypass via IP alias allows SSRF |
| CVE-2026-42044 | 6.5 MEDIUM | Axios: Invisible JSON Response Tampering via Prototype Pollution Gadget in `parseReviver` |
| CVE-2026-42042 | 5.4 MEDIUM | Axios: XSRF Token Cross-Origin Leakage via Prototype Pollution Gadget in `withXSRFToken` B |
| CVE-2026-42037 | 5.3 MEDIUM | Axios: CRLF Injection in multipart/form-data body via unsanitized blob.type in formDataToS |
| CVE-2026-42034 | 5.3 MEDIUM | Axios: HTTP adapter streamed uploads bypass maxBodyLength when maxRedirects: 0 |
| CVE-2026-42036 | 5.3 MEDIUM | Axios: HTTP adapter streamed responses bypass maxContentLength |
| CVE-2026-42041 | 4.8 MEDIUM | Axios: Authentication Bypass via Prototype Pollution Gadget in `validateStatus` Merge Stra |
| CVE-2026-42040 | 3.7 LOW | Axios: Null Byte Injection via Reverse-Encoding in AxiosURLSearchParams |
IV. Related Vulnerabilities
Same product: axios
- CVE-2026-42264
Axios: Prototype pollution read-side gadgets in HTTP adapter - CVE-2026-42042
Axios: XSRF Token Cross-Origin Leakage via Prototype Polluti - CVE-2026-42036
Axios: HTTP adapter streamed responses bypass maxContentLeng - CVE-2026-42034
Axios: HTTP adapter streamed uploads bypass maxBodyLength wh - CVE-2026-42037
Axios: CRLF Injection in multipart/form-data body via unsani
Same vendor: axios
- CVE-2026-42264
Axios: Prototype pollution read-side gadgets in HTTP adapter - CVE-2026-42042
Axios: XSRF Token Cross-Origin Leakage via Prototype Polluti - CVE-2026-42036
Axios: HTTP adapter streamed responses bypass maxContentLeng - CVE-2026-42034
Axios: HTTP adapter streamed uploads bypass maxBodyLength wh - CVE-2026-42037
Axios: CRLF Injection in multipart/form-data body via unsani
Same weakness: CWE-674
V. Comments for CVE-2026-42039
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