Axios is a promise based HTTP client for the browser and Node.js. From 1.0.0 to before 1.15.2, he Axios library is vulnerable to a Prototype Pollution "Gadget" attack that allows any Object.prototype pollution in the application's dependency tree to be escalated into surgical, invisible modification of all JSON API responses — including privilege escalation, balance manipulation, and authorization bypass. The default transformResponse function at lib/defaults/index.js:124 calls JSON.parse(data, this.parseReviver), where this is the merged config object. Because parseReviver is not present in Axios defaults, not validated by assertOptions, and not subject to any constraints, a polluted Object.prototype.parseReviver function is called for every key-value pair in every JSON response, allowing the attacker to selectively modify individual values while leaving the rest of the response intact. This vulnerability is fixed in 1.15.2.
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-3w6x-2g7m-8v23 Axios: Invisible JSON Response Tampering via Prototype Pollution Gadget in `parseReviver`
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

References
Link Providers
https://access.redhat.com/errata/RHSA-2026:16532 cve-icon
https://access.redhat.com/errata/RHSA-2026:16534 cve-icon
https://access.redhat.com/errata/RHSA-2026:16535 cve-icon
https://access.redhat.com/errata/RHSA-2026:16542 cve-icon
https://access.redhat.com/errata/RHSA-2026:17657 cve-icon
https://access.redhat.com/errata/RHSA-2026:17699 cve-icon
https://access.redhat.com/errata/RHSA-2026:19109 cve-icon
https://access.redhat.com/errata/RHSA-2026:19375 cve-icon
https://access.redhat.com/errata/RHSA-2026:20338 cve-icon
https://access.redhat.com/errata/RHSA-2026:20454 cve-icon
https://access.redhat.com/errata/RHSA-2026:20889 cve-icon
https://access.redhat.com/errata/RHSA-2026:20938 cve-icon
https://access.redhat.com/errata/RHSA-2026:21017 cve-icon
https://access.redhat.com/errata/RHSA-2026:21338 cve-icon
https://access.redhat.com/errata/RHSA-2026:21772 cve-icon
https://access.redhat.com/errata/RHSA-2026:22465 cve-icon
https://access.redhat.com/errata/RHSA-2026:22629 cve-icon
https://access.redhat.com/errata/RHSA-2026:22840 cve-icon
https://access.redhat.com/errata/RHSA-2026:23361 cve-icon
https://access.redhat.com/errata/RHSA-2026:24471 cve-icon
https://access.redhat.com/errata/RHSA-2026:24473 cve-icon
https://access.redhat.com/errata/RHSA-2026:24536 cve-icon
https://access.redhat.com/errata/RHSA-2026:24539 cve-icon
https://access.redhat.com/errata/RHSA-2026:24853 cve-icon
https://access.redhat.com/errata/RHSA-2026:25041 cve-icon
https://access.redhat.com/errata/RHSA-2026:25089 cve-icon
https://access.redhat.com/errata/RHSA-2026:25271 cve-icon
https://access.redhat.com/errata/RHSA-2026:25273 cve-icon
https://access.redhat.com/errata/RHSA-2026:26214 cve-icon
https://access.redhat.com/errata/RHSA-2026:26225 cve-icon
https://access.redhat.com/errata/RHSA-2026:26232 cve-icon
https://access.redhat.com/errata/RHSA-2026:33574 cve-icon
https://access.redhat.com/errata/RHSA-2026:34608 cve-icon
https://access.redhat.com/errata/RHSA-2026:36107 cve-icon
https://access.redhat.com/errata/RHSA-2026:36882 cve-icon
https://access.redhat.com/errata/RHSA-2026:41066 cve-icon
https://access.redhat.com/errata/RHSA-2026:42078 cve-icon
https://access.redhat.com/errata/RHSA-2026:50300 cve-icon
https://access.redhat.com/security/cve/CVE-2026-42044 cve-icon
https://bugzilla.redhat.com/show_bug.cgi?id=2461624 cve-icon
https://github.com/axios/axios/security/advisories/GHSA-3w6x-2g7m-8v23 cve-icon cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-42044 cve-icon
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-42044.json cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-42044 cve-icon
History

Wed, 13 May 2026 00:15:00 +0000

Type Values Removed Values Added
First Time appeared Redhat
Redhat service Mesh
CPEs cpe:/a:redhat:service_mesh:3.0::el9
cpe:/a:redhat:service_mesh:3.1::el9
cpe:/a:redhat:service_mesh:3.2::el9
cpe:/a:redhat:service_mesh:3.3::el9
Vendors & Products Redhat
Redhat service Mesh
References
Metrics threat_severity

None

threat_severity

Important


Mon, 27 Apr 2026 20:15:00 +0000

Type Values Removed Values Added
First Time appeared Axios
Axios axios
CPEs cpe:2.3:a:axios:axios:*:*:*:*:*:node.js:*:*
Vendors & Products Axios
Axios axios

Fri, 24 Apr 2026 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 24 Apr 2026 18:15:00 +0000

Type Values Removed Values Added
Description Axios is a promise based HTTP client for the browser and Node.js. From 1.0.0 to before 1.15.2, he Axios library is vulnerable to a Prototype Pollution "Gadget" attack that allows any Object.prototype pollution in the application's dependency tree to be escalated into surgical, invisible modification of all JSON API responses — including privilege escalation, balance manipulation, and authorization bypass. The default transformResponse function at lib/defaults/index.js:124 calls JSON.parse(data, this.parseReviver), where this is the merged config object. Because parseReviver is not present in Axios defaults, not validated by assertOptions, and not subject to any constraints, a polluted Object.prototype.parseReviver function is called for every key-value pair in every JSON response, allowing the attacker to selectively modify individual values while leaving the rest of the response intact. This vulnerability is fixed in 1.15.2.
Title Axios: Invisible JSON Response Tampering via Prototype Pollution Gadget in `parseReviver`
Weaknesses CWE-1321
CWE-915
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-08-12T12:04:41.474Z

Reserved: 2026-04-23T16:05:01.709Z

Link: CVE-2026-42044

cve-icon Vulnrichment

Updated: 2026-08-12T12:04:41.474Z

cve-icon NVD

Status : Modified

Published: 2026-04-24T18:16:31.613

Modified: 2026-08-12T12:19:13.330

Link: CVE-2026-42044

cve-icon Redhat

Severity : Important

Publid Date: 2026-04-24T17:49:49Z

Links: CVE-2026-42044 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-04-28T06:00:09Z

Weaknesses