# CVE-2026-42044: Axios: Invisible JSON Response Tampering via Prototype Pollution Gadget in `parseReviver`

> CVE-2026-42044: Axios: Invisible JSON Response Tampering via Prototype Pollution Gadget in `parseReviver`. CVSS 6.5 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-42044
Last updated: 2026-09-10T13:20:05Z

- Published: 2026-04-24 17:49 UTC · Updated: 2026-09-10 13:20 UTC · Assigner: GitHub\_M
- CVSS: 6.5 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N
- EPSS: 0.61%, 49th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-1321, CWE-915

## 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.

## Affected vendors and products

- axios: axios
- Red Hat: Cryostat 4
- Red Hat: Gatekeeper 3
- Red Hat: HawtIO HawtIO 4.4.0
- Red Hat: Migration Toolkit for Applications 8
- Red Hat: Network Observability Operator
- Red Hat: OpenShift Pipelines
- Red Hat: OpenShift Service Mesh 3
- Red Hat: Red Hat 3scale API Management Platform 2
- Red Hat: Red Hat Advanced Cluster Management for Kubernetes 2.14
- Red Hat: Red Hat Advanced Cluster Management for Kubernetes 2.15
- Red Hat: Red Hat Advanced Cluster Management for Kubernetes 2.16
- Red Hat: Red Hat Advanced Cluster Security 4.9
- Red Hat: Red Hat Advanced Cluster Security for Kubernetes 4.10
- Red Hat: Red Hat Ansible Automation Platform 2
- Red Hat: Red Hat Ansible Automation Platform 2.5 for RHEL 8
- Red Hat: Red Hat Ansible Automation Platform 2.5 for RHEL 9
- Red Hat: Red Hat build of Apicurio Registry 2
- Red Hat: Red Hat build of Apicurio Registry 3
- Red Hat: Red Hat Build of Podman Desktop - Tech Preview
- Red Hat: Red Hat Data Grid 8
- Red Hat: Red Hat Developer Hub
- Red Hat: Red Hat Enterprise Linux 8
- Red Hat: Red Hat Enterprise Linux 9
- Red Hat: Red Hat Enterprise Linux AI (RHEL AI) 3
- Red Hat: Red Hat Fuse 7
- Red Hat: Red Hat Hardened Images
- Red Hat: Red Hat OpenShift AI (RHOAI)
- Red Hat: Red Hat OpenShift Container Platform 4
- Red Hat: Red Hat OpenShift Virtualization 4
- Red Hat: Red Hat Process Automation 7
- Red Hat: Red Hat Trusted Profile Analyzer
- Red Hat: Self-service automation portal 2
- Red Hat: Streams for Apache Kafka 2.9.4
- Red Hat: streams for Apache Kafka 3

## Tracked companies

- [Jira](https://rewindex.com/company/jira.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-42044)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-42044)
- [https://github.com/axios/axios/security/advisories/GHSA-3w6x-2g7m-8v23](https://github.com/axios/axios/security/advisories/GHSA-3w6x-2g7m-8v23)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-42044 · Markdown: https://rewindex.com/cve/CVE-2026-42044.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-42044 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T04:04:50.242Z