CVE-2021-3749— Inefficient Regular Expression Complexity in axios/axios
Quick assessment
Affected
axios axios/axios
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Axios是一款基于Promise（异步编程的一种解决方案）的HTTP客户端。 Axios 存在安全漏洞，该漏洞源于在 axios 包中发现了一个 ReDoS（正则表达式拒绝服务）缺陷。攻击者可利用该漏洞为修剪功能提供精心设计的输入导致应用程序消耗过多的 CPU。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-3749
Vulnerability Information
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Vulnerability Title
Inefficient Regular Expression Complexity in axios/axios
Source: CVE Program / CVE List V5
Vulnerability Description
axios is vulnerable to Inefficient Regular Expression Complexity
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1333
Source: CVE Program / CVE List V5
Vulnerability Title
Axios 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Axios是一款基于Promise（异步编程的一种解决方案）的HTTP客户端。 Axios 存在安全漏洞，该漏洞源于在 axios 包中发现了一个 ReDoS（正则表达式拒绝服务）缺陷。攻击者可利用该漏洞为修剪功能提供精心设计的输入导致应用程序消耗过多的 CPU。
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
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| axios | axios/axios | unspecified ~ 0.21.1 | - |
|
II. Public POCs for CVE-2021-3749
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | Axios Redos (CVE-2021-3749) proof of concept | https://github.com/T-Guerrero/axios-redos | POC Details |
AI-Generated POC
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Patches & Fixes for CVE-2021-3749 (1)
Vendor Advisories for CVE-2021-3749 (3)
-
https://huntr.dev/bounties/1e8f07fc-c384-4ff9-8498-0690de2e8c31 x_refsource_CONFIRM
-
https://cert-portal.siemens.com/productcert/pdf/ssa-637483.pdf x_refsource_CONFIRM
-
https://www.oracle.com/security-alerts/cpujul2022.html x_refsource_MISC
Mailing List Discussions for CVE-2021-3749 (9)
-
https://lists.apache.org/thread.html/rfa094029c959da0f7c8cd7dc9c4e59d21b03457bf0cedf6c93e1bb0a%40%3Cdev.druid.apache.org%3E mailing-list x_refsource_MLIST
IV. Related Vulnerabilities
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-
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Same weakness: CWE-1333
-
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CVE-2026-115349
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Pillow: ReDoS in XbmImagePlugin: 512-byte file stalls Image.
V. Comments for CVE-2021-3749
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