Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-67319

CVE-2026-67319MEDIUM

axios before 0.33.0 Prototype Pollution via nested option objects

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   H   P   N   N   N   L   N    6.3   .0032   22.5     —

AFFECTED
  Product  Versions  Fixed
  axios    0.8.0 –   0.33.0
  axios    1.0.0 –   1.18.0

TIMELINE
  Jul 29  Reserved by VulnCheck
  Aug 1   Published (CNA: VulnCheck)
  Sep 1   EXPLOIT PUBLISHED — CVE-2026-67319 (axios). Public exploit reference added.

CWE-1321 · CNA: VulnCheck · CVSS v4.0 · 2 references · NVD status: Analyzed

Description

axios before 0.33.0 (and 1.x before 1.18.0) can consume inherited properties from nested request option objects when the JavaScript process's Object.prototype has already been polluted by another component. While the top-level merged config uses a null prototype, nested plain objects such as auth and paramsSerializer are cloned into ordinary objects and read without own-property checks. When an application passes placeholder nested objects such as auth: {} or paramsSerializer: {}, inherited username/password values can cause silent injection of an Authorization: Basic header, and inherited encode/serialize values can alter query-string serialization (full serializer replacement requires a function-valued pollution primitive). This is exploitable only in the presence of pre-existing prototype pollution.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
July 29, 2026	Reserved	Reserved by VulnCheck
August 1, 2026	Published	Published (CNA: VulnCheck)
September 1, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-67319 (axios). Public exploit reference added.

Affected

Affected products and packages — 2 rows
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
axios	axios	—	0.8.0	0.33.0
axios	axios	—	1.0.0	1.18.0

Weaknesses

CWE-1321

References (2)

https://github.com/axios/axios/security/advisories/GHSA-7q8q-rj6j-mhjq [Exploit, Mitigation, Vendor Advisory]
https://www.vulncheck.com/advisories/axios-before-prototype-pollution-via-nested-option-objects [Third Party Advisory]

Authoritative record: CVE-2026-67319 at cve.org

Vendors: axios

Weaknesses: CWE-1321

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-67319 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.