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CVE-2026-42039

Axios denial of service

7.5 HIGHPublic exploitEPSS 0.97%
  1. Published24 Apr 2026

Description

Axios is a promise based HTTP client for the browser and Node.js. Prior to 1.15.1 and 0.31.1, toFormData recursively walks nested objects with no depth limit, so a deeply nested value passed as request data crashes the Node.js process with a RangeError. This vulnerability is fixed in 1.15.1 and 0.31.1.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

Axios≥ 1.0.0 < 1.15.1 · < 0.31.1

Remediation

Fixed in
Axios≥ 1.15.1

References

and 33 more references

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Frequently asked

Is CVE-2026-42039 being actively exploited?

CVE-2026-42039 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.97%.

How severe is CVE-2026-42039?

CVE-2026-42039 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 0.97% probability of exploitation.

Which products are affected by CVE-2026-42039?

Affected products include Axios.

How do I fix CVE-2026-42039?

Upgrade affected software to a fixed version, for example Axios 1.15.1 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-42039 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.