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CVE-2026-42041

medium

Axios is a promise based HTTP client for the browser and Node.js.

Vendor / product: Axios — axios

Axios is a promise based HTTP client for the browser and Node.js. Prior to 1.15.1 and 0.31.1, the Axios library is vulnerable to a Prototype Pollution "Gadget" attack that allows any Object.prototype pollution to silently suppress all HTTP error responses (401, 403, 500, etc.), causing them to be treated as successful responses. This completely bypasses application-level authentication and error handling. The root cause is that validateStatus is the only config property using the mergeDirectKeys merge strategy, which uses JavaScript's in operator — an operator that inherently traverses the prototype chain. When Object.prototype.validateStatus is polluted with () => true, all HTTP status codes are accepted as success. This vulnerability is fixed in 1.15.1 and 0.31.1.

CVSS
6.5
6.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2026-04-24 18:16
Modified: 2026-11-11 23:10
NVD status: Modified
Last synced 3 hours ago
Verified against the source API 2026-11-11 23:13 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).

Affected products

axios / axios <0.31.1, ≥1.0.0 <1.15.1

Weakness classification (CWE)

CWE-287 CWE-1321 CWE-915

Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.

Mitigation & advisories

Vendor advisory: https://github.com/axios/axios/security/advisories/GHSA-w9j2-pvgh-6h63
Vendor advisory: https://github.com/axios/axios/security/advisories/GHSA-w9j2-pvgh-6h63
Patch / mitigation: https://github.com/axios/axios/security/advisories/GHSA-w9j2-pvgh-6h63
Patch / mitigation: https://github.com/axios/axios/security/advisories/GHSA-w9j2-pvgh-6h63

References

Data sources

NVD CVE API 2.0 — fetched 2026-11-11 23:13 UTC · record ↗

Learn the basics

Understanding CVEs and CVSS Scores

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CVE-2026-42042CVE-2026-42040CVE-2026-42039CVE-2026-42038CVE-2026-42037