CVE-2026-67321: axios versions 0.31.1 before 0.33.0 and 1.15.1 before 1.18.0 contain an incomplete depth-limit bypass in toFor

Q: How do I fix CVE-2026-67321?

axios: upgrade to 0.33.0, 1.18.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-67321 being exploited?

CVE-2026-67321 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-2026-67321 affect?

CVE-2026-67321 affects axios. Severity is high (CVSS 7.5). axios versions 0.31.1 before 0.33.0 and 1.15.1 before 1.18.0 contain an incomplete depth-limit bypass in toFormData.js when serializing objects with top-level keys ending in '{}'. Attackers who control object keys and nested values passed t

Q: How urgent is CVE-2026-67321?

Priority 47/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2026-67321 is a high-severity flaw (CVSS 7.5) affecting axios. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

axios versions 0.31.1 before 0.33.0 and 1.15.1 before 1.18.0 contain an incomplete depth-limit bypass in toFormData.js when serializing objects with top-level keys ending in '{}'. Attackers who control object keys and nested values passed to axios form or parameter serialization can trigger a RangeError from JSON.stringify, causing denial of service in the affected request path.

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	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 55%)
CISA exploited list	No
Weakness	CWE-674
Published	2026-08-01
Last modified	2026-09-01

Publisher (CNA): VulnCheck · Vendor: axios

Last updated 2026-09-01 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-01 13:17 UTCPublished CVE record published
2026-09-01 15:38 UTCUpdated Record last modified

axios axios UPGRADE

Affected: >= 0.31.1 and < 0.33.0 · >= 1.15.1 and < 1.18.0

Fixed in: 0.33.0, 1.18.0

Safe to downgrade to: a release before 0.31.1

1. Check installed version

npm ls axios

2. UPGRADE to 0.33.0

npm install axios@">=0.33.0"

3. If no update is available yet, DOWNGRADE to a release before 0.31.1

npm view axios versions npm install axios@"<0.31.1"

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-2026-67321?

axios: upgrade to 0.33.0, 1.18.0. Exact commands for each OS are on this page.

Is CVE-2026-67321 being exploited?

CVE-2026-67321 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-2026-67321 affect?

CVE-2026-67321 affects axios. Severity is high (CVSS 7.5). axios versions 0.31.1 before 0.33.0 and 1.15.1 before 1.18.0 contain an incomplete depth-limit bypass in toFormData.js when serializing objects with top-level keys ending in '{}'. Attackers who control object keys and nested values passed t

How urgent is CVE-2026-67321?

Priority 47/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

Axios vulnerabilities

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References

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