CVE-2026-42043
Axios: Incomplete Fix for CVE-2025-62718 — NO_PROXY Protection Bypassed via RFC 1122 Loopback Subnet (127.0.0.0/8) in Axios 1.15.0
Description
Axios is a promise based HTTP client for the browser and Node.js. Prior to 1.15.1 and 0.31.1, an attacker who can influence the target URL of an Axios request can use any address in the 127.0.0.0/8 range (other than 127.0.0.1) to completely bypass the NO_PROXY protection. This vulnerability is due to an incomplete for CVE-2025-62718, This vulnerability is fixed in 1.15.1 and 0.31.1.
INFO
Published Date :
April 24, 2026, 6:16 p.m.
Last Modified :
April 27, 2026, 8:05 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | HIGH | MITRE-CVE | ||||
| CVSS 3.1 | CRITICAL | [email protected] |
Solution
- Update Axios to version 1.15.1 or later.
- Update Axios to version 0.31.1 or later.
Public PoC/Exploit Available at Github
CVE-2026-42043 has a 1 public
PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-42043.
| URL | Resource |
|---|---|
| https://github.com/axios/axios/security/advisories/GHSA-pmwg-cvhr-8vh7 | Exploit Mitigation Vendor Advisory |
| https://github.com/axios/axios/security/advisories/GHSA-pmwg-cvhr-8vh7 | Exploit Mitigation Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-42043 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-42043
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
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The following list is the news that have been mention
CVE-2026-42043 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-42043 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Apr. 27, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N Added CPE Configuration OR *cpe:2.3:a:axios:axios:*:*:*:*:*:node.js:*:* versions up to (excluding) 0.31.1 *cpe:2.3:a:axios:axios:*:*:*:*:*:node.js:*:* versions from (including) 1.0.0 up to (excluding) 1.15.1 Added Reference Type CISA-ADP: https://github.com/axios/axios/security/advisories/GHSA-pmwg-cvhr-8vh7 Types: Exploit, Mitigation, Vendor Advisory Added Reference Type GitHub, Inc.: https://github.com/axios/axios/security/advisories/GHSA-pmwg-cvhr-8vh7 Types: Exploit, Mitigation, Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Apr. 27, 2026
Action Type Old Value New Value Added Reference https://github.com/axios/axios/security/advisories/GHSA-pmwg-cvhr-8vh7 -
New CVE Received by [email protected]
Apr. 24, 2026
Action Type Old Value New Value Added Description Axios is a promise based HTTP client for the browser and Node.js. Prior to 1.15.1 and 0.31.1, an attacker who can influence the target URL of an Axios request can use any address in the 127.0.0.0/8 range (other than 127.0.0.1) to completely bypass the NO_PROXY protection. This vulnerability is due to an incomplete for CVE-2025-62718, This vulnerability is fixed in 1.15.1 and 0.31.1. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N Added CWE CWE-441 Added CWE CWE-918 Added CWE CWE-183 Added Reference https://github.com/axios/axios/security/advisories/GHSA-pmwg-cvhr-8vh7