CVE-2026-42264

critical

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.

References

https://www.securityweek.com/atlassian-splunk-patch-critical-vulnerabilities/

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42264.json

https://github.com/axios/axios/security/advisories/GHSA-q8qp-cvcw-x6jj

https://github.com/axios/axios/releases/tag/v1.15.2

https://github.com/axios/axios/pull/10779

https://github.com/axios/axios/commit/47915144662f2733e6c051bdcb895a8c8f0586aa

https://bugzilla.redhat.com/show_bug.cgi?id=2467927

https://access.redhat.com/security/cve/CVE-2026-42264

https://access.redhat.com/errata/RHSA-2026:37297

https://access.redhat.com/errata/RHSA-2026:37288

https://access.redhat.com/errata/RHSA-2026:37287

https://access.redhat.com/errata/RHSA-2026:36207

https://access.redhat.com/errata/RHSA-2026:33173

https://access.redhat.com/errata/RHSA-2026:20938

https://access.redhat.com/errata/RHSA-2026:20889

Details

Source: Mitre, NVD

Published: 2026-05-08

Updated: 2026-07-15

Risk Information

CVSS v2

Base Score: 9.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:N

Severity: High

CVSS v3

Base Score: 9.1

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Severity: Critical

EPSS

EPSS: 0.00033