CVE-2026-42264
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…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.71%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 9.1 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- EPSS
- 0.71% probability · 52th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-1321, CWE-915
- Affected
- axios/axios
- Source
- security-advisories@github.com
References
- https://github.com/axios/axios/commit/47915144662f2733e6c051bdcb895a8c8f0586aaPatch
- https://github.com/axios/axios/pull/10779Issue Tracking, Patch
- https://github.com/axios/axios/releases/tag/v1.15.2Product, Release Notes
- https://github.com/axios/axios/security/advisories/GHSA-q8qp-cvcw-x6jjExploit, Mitigation, Vendor Advisory
- https://access.redhat.com/errata/RHSA-2026:20889
- https://access.redhat.com/errata/RHSA-2026:20938
- https://access.redhat.com/errata/RHSA-2026:33173
- https://access.redhat.com/errata/RHSA-2026:36207
- https://access.redhat.com/errata/RHSA-2026:37287
- https://access.redhat.com/errata/RHSA-2026:37288
- https://access.redhat.com/errata/RHSA-2026:37297
- https://access.redhat.com/errata/RHSA-2026:41928
- https://access.redhat.com/errata/RHSA-2026:41951
- https://access.redhat.com/errata/RHSA-2026:42142
- https://access.redhat.com/errata/RHSA-2026:50300
- https://access.redhat.com/errata/RHSA-2026:60520
- https://access.redhat.com/errata/RHSA-2026:62260
- https://access.redhat.com/errata/RHSA-2026:66488
- https://access.redhat.com/errata/RHSA-2026:66545
- https://access.redhat.com/security/cve/CVE-2026-42264
- https://bugzilla.redhat.com/show_bug.cgi?id=2467927
- https://github.com/axios/axios/security/advisories/GHSA-q8qp-cvcw-x6jjExploit, Mitigation, Vendor Advisory
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42264.json
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.