CVE-2026-42033: Axios is a promise based HTTP client for the browser and Node.js

Q: How do I fix CVE-2026-42033?

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

Q: Is CVE-2026-42033 being exploited?

CVE-2026-42033 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-2026-42033 affect?

CVE-2026-42033 affects axios. Severity is high (CVSS 7.4). Axios is a promise based HTTP client for the browser and Node.js. Prior to 1.15.1 and 0.31.1, when Object.prototype has been polluted by any co-dependency with keys that axios reads without a hasOwnProperty guard, an attacker can (a) silent

Q: How urgent is CVE-2026-42033?

Priority 51/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.4REMOTEUPGRADE

CVE-2026-42033 is a high-severity flaw (CVSS 7.4) 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, when Object.prototype has been polluted by any co-dependency with keys that axios reads without a hasOwnProperty guard, an attacker can (a) silently intercept and modify every JSON response before the application sees it, or (b) fully hijack the underlying HTTP transport, gaining access to request credentials, headers, and body. The precondition is proto

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	7.4 (High)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	None
User interaction	None
EPSS exploit chance	0.9% (top 41%)
CISA exploited list	No
Weakness	CWE-1321, CWE-915
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-2026-42033?

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

Is CVE-2026-42033 being exploited?

CVE-2026-42033 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-2026-42033 affect?

CVE-2026-42033 affects axios. Severity is high (CVSS 7.4). Axios is a promise based HTTP client for the browser and Node.js. Prior to 1.15.1 and 0.31.1, when Object.prototype has been polluted by any co-dependency with keys that axios reads without a hasOwnProperty guard, an attacker can (a) silent

How urgent is CVE-2026-42033?

Priority 51/100. 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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