CVE-2026-42043: Axios is a promise based HTTP client for the browser and Node.js

Q: How do I fix CVE-2026-42043?

axios: upgrade to 0.31.1, 1.15.1. Exact commands for each OS are on this page.

Q: Is CVE-2026-42043 being exploited?

CVE-2026-42043 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-42043 affect?

CVE-2026-42043 affects axios. Severity is high (CVSS 7.2). 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

Q: How urgent is CVE-2026-42043?

Priority 49/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.2REMOTEUPGRADE

CVE-2026-42043 is a high-severity flaw (CVSS 7.2) affecting axios. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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.

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.2 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 47%)
CISA exploited list	No
Weakness	CWE-183, CWE-441, CWE-918
Published	2026-04-24
Last modified	2026-09-10

Publisher (CNA): GitHub, Inc. · Vendor: axios

Last updated 2026-09-10 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-04-24 18:16 UTCPublished CVE record published
2026-09-10 13:20 UTCUpdated Record last modified

axios axios UPGRADE

Affected: < 0.31.1 · >= 1.0.0 and < 1.15.1

Fixed in: 0.31.1, 1.15.1

Safe to downgrade to: a release before 1.0.0

1. Check installed version

npm ls axios

2. UPGRADE to 0.31.1

npm install axios@">=0.31.1"

3. If no update is available yet, DOWNGRADE to a release before 1.0.0

npm view axios versions npm install axios@"<1.0.0"

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-42043?

axios: upgrade to 0.31.1, 1.15.1. Exact commands for each OS are on this page.

Is CVE-2026-42043 being exploited?

CVE-2026-42043 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-42043 affect?

CVE-2026-42043 affects axios. Severity is high (CVSS 7.2). 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

How urgent is CVE-2026-42043?

Priority 49/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Node.js vulnerabilities · Axios vulnerabilities

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References

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