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CVE-2026-101901— Axios: Denial of Service via Unhandled 'error' Event in HTTP/2 ClientHttp2Session Initialization

Quick assessment

Affected
axios axios
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.

Axios 是一个面向浏览器和 Node.js 的基于 Promise 的 HTTP 客户端。在版本 1.13.0 至 1.20.0 之间，Axios 在 HTTP/2 会话初始化或复用过程中，未能为 提供充分的错误处理机制。当请求使用 且 在会话初始化或复用期间触发错误时，该未处理的会话错误会绕过正常的 Promise 拒绝处理流程。由此引发的未捕获错误可能导致 Node.js 进程终止，从而造成拒绝服务（DoS）。该问题已在版本 1.20.0 中得到修复。

CVSS 8.2 · High

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 1

VendorProduct Version RangeStatus
axios axios >= 1.13.0, < 1.20.0 affected
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I. Basic Information for CVE-2026-101901

Vulnerability Information
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Vulnerability Title
Axios: Denial of Service via Unhandled 'error' Event in HTTP/2 ClientHttp2Session Initialization
Source: CVE Program / CVE List V5
Vulnerability Description
Axios is a promise-based HTTP client for the browser and Node.js. From 1.13.0 until 1.20.0, Http2Sessions does not install adequate error handling for a ClientHttp2Session during Axios HTTP/2 session initialization or reuse. A request uses httpVersion: 2 and the ClientHttp2Session emits an error during session initialization or reuse. The unhandled session error escapes normal Promise rejection handling. The uncaught error can terminate the Node.js process and cause denial of service. This issue is fixed in version 1.20.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
axios axios >= 1.13.0, < 1.20.0 -

II. Public POCs for CVE-2026-101901

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III. Intelligence Information for CVE-2026-101901

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Other References for CVE-2026-101901 (4)

Same Patch Batch · axios · 2026-09-28 · 11 CVEs total

CVE-2026-101909 8.3 HIGH Axios: Prototype Pollution Gadget in axios toFormData Options
CVE-2026-101906 8.2 HIGH Axios: ReDoS (O(N²)) in shouldBypassProxy host normalization, reachable via untrusted redi
CVE-2026-101903 8.2 HIGH Axios: ReDoS in fromDataURI data: URL parser freezes the Node event loop (DoS)
CVE-2026-101905 7.6 HIGH Axios: Node HTTP adapter prototype-pollution gadget allows request socket hijack via inher
CVE-2026-101898 7.0 HIGH Axios: HTTP/2 adapter bypasses configured DNS lookup and proxy controls
CVE-2026-101907 7.0 HIGH Axios: maxRedirects: 0 is not enforced by the fetch adapter, allowing redirect-based SSRF
CVE-2026-101900 6.9 MEDIUM Axios: Fetch Adapter Header Injection via Inherited FormData getHeaders
CVE-2026-101902 6.9 MEDIUM Axios: Prototype-Pollution Gadget in the Default Instance Allows Inherited Object.prototyp
CVE-2026-101904 6.9 MEDIUM Axios: Header Injection via Inherited headers After Minimal Interceptor
CVE-2026-101908 6.9 MEDIUM Axios: Prototype pollution gadget in fetch adapter can alter outbound requests

IV. Related Vulnerabilities

Same product: axios
Same vendor: axios
Same weakness: CWE-400

V. Comments for CVE-2026-101901

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