How severe is CVE-2026-42264?

CVE-2026-42264 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.

Is CVE-2026-42264 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-42264?

CVE-2026-42264 affects Axios. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-42264?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-42264 have an EU (EUVD) identifier?

Yes. CVE-2026-42264 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28505.

When was CVE-2026-42264 published?

CVE-2026-42264 was published on 2026-05-08 and last updated on 2026-07-08.

CVE-2026-42264

CVE-2026-42264 is a high-severity vulnerability in Axios with a CVSS 3.x base score of 7.4. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-1321.

Key facts

Severity: High (CVSS 3.x base score 7.4)
EPSS exploit prediction: 1% (42nd percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-28505
Weakness: CWE-1321
Affected product: Axios
Published: 2026-05-08
Last modified: 2026-07-08

Description

Axios is a promise based HTTP client for the browser and Node.js. From version 1.0.0 to before version 1.15.2, fFive config properties (auth, baseURL, socketPath, beforeRedirect, and insecureHTTPParser) in the HTTP adapter are read via direct property access without hasOwnProperty guards, making them exploitable as prototype pollution gadgets. When Object.prototype is polluted by another dependency in the same process, axios silently picks up these polluted values on every outbound HTTP request. This issue has been patched in version 1.15.2.

Frequently asked questions

What is CVE-2026-42264?: Axios is a promise based HTTP client for the browser and Node.js. From version 1.0.0 to before version 1.15.2, fFive config properties (auth, baseURL, socketPath, beforeRedirect, and insecureHTTPParser) in the HTTP adapter are read via direct property access without hasOwnProperty guards, making them exploitable as prototype pollution gadgets. When Object.prototype is polluted by another dependency in the same process, axios silently picks up these polluted values on every outbound HTTP request. This issue has been patched in version 1.15.2.
How severe is CVE-2026-42264?: CVE-2026-42264 has a CVSS 3.x base score of 7.4, rated high severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability none.
Is CVE-2026-42264 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (42nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-42264?: CVE-2026-42264 affects Axios. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-42264?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-42264 have an EU (EUVD) identifier?: Yes. CVE-2026-42264 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-28505.
When was CVE-2026-42264 published?: CVE-2026-42264 was published on 2026-05-08 and last updated on 2026-07-08.

References

Affected products (1)

cpe:2.3:a:axios:axios:*:*:*:*:*:node.js:*:*

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Threat intelligence

Threat-intel indicators referencing this CVE:

157.66.35.106 (ipv4-addr)