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CVE-2026-67314— axios before 1.18.0 Prototype Pollution via auth subfields

Quick assessment

Affected
axios axios
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Axios是Axios团队开源的一款基于Promise(异步编程的一种解决方案)的HTTP客户端。 Axios 1.15.2版本至1.18.0之前版本存在输入验证错误漏洞，该漏洞源于Basic auth子字段处理存在原型污染读取端小工具，axios会从继承的Object.prototype中读取username和password值，可能导致攻击者篡改外发请求，注入自定义Basic auth凭据或替换现有Authorization头。

CVSS 6.3 · Medium EPSS 0.41% · P33

Affected Version Matrix 2

VendorProduct Version RangeStatus
axios axios 1.15.2< 1.18.0 affected
1.18.0 unaffected
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I. Basic Information for CVE-2026-67314

Vulnerability Information
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Vulnerability Title
axios before 1.18.0 Prototype Pollution via auth subfields
Source: CVE Program / CVE List V5
Vulnerability Description
axios versions >=1.15.2 and <1.18.0 contain prototype-pollution read-side gadgets in Basic auth subfield handling (lib/adapters/http.js and lib/helpers/resolveConfig.js). When an application is already affected by a separate prototype-pollution primitive and makes an axios request with an own auth object that omits the username and/or password properties, axios reads the inherited Object.prototype.username and Object.prototype.password values and uses them to construct an outbound 'Authorization: Basic ...' header. axios itself does not pollute prototypes. The practical impact is outbound request tampering: an attacker who controls the polluted prototype values can inject attacker-chosen Basic auth credentials or replace an existing Authorization header. Credential disclosure is only possible under additional application-specific conditions.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1321
Source: CVE Program / CVE List V5
Vulnerability Title
Axios 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Axios是Axios团队开源的一款基于Promise(异步编程的一种解决方案)的HTTP客户端。 Axios 1.15.2版本至1.18.0之前版本存在输入验证错误漏洞，该漏洞源于Basic auth子字段处理存在原型污染读取端小工具，axios会从继承的Object.prototype中读取username和password值，可能导致攻击者篡改外发请求，注入自定义Basic auth凭据或替换现有Authorization头。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
axios axios 1.15.2 ~ 1.18.0 -

II. Public POCs for CVE-2026-67314

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III. Intelligence Information for CVE-2026-67314

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Vendor Advisories for CVE-2026-67314 (2)

Same Patch Batch · axios · 2026-08-01 · 10 CVEs total

CVE-2026-67320 8.3 HIGH axios before 0.33.0 Prototype Pollution via Node HTTP adapter
CVE-2026-67315 6.9 MEDIUM axios 0.31.0 before 0.33.0 and 1.15.0 before 1.18.0 NO_PROXY Bypass via 0.0.0.0
CVE-2026-67321 6.9 MEDIUM axios 0.31.1 before 0.33.0 and 1.15.1 before 1.18.0 Denial of Service via maxDepth bypass
CVE-2026-67318 6.3 MEDIUM axios 1.13.0 before 1.18.0 maxBodyLength Bypass via HTTP/2
CVE-2026-67312 6.3 MEDIUM axios 0.28.0 before 0.33.0 Denial of Service via formToJSON
CVE-2026-67316 6.3 MEDIUM axios before 1.18.0 Prototype Pollution via bodyless methods
CVE-2026-67313 6.3 MEDIUM axios 0.28.0 before 1.18.0 Denial of Service via formDataToJSON
CVE-2026-67317 6.3 MEDIUM axios 1.7.0 before 1.18.0 maxBodyLength Bypass via ReadableStream
CVE-2026-67319 6.3 MEDIUM axios before 0.33.0 Prototype Pollution via nested option objects

IV. Related Vulnerabilities

Same product: axios
Same vendor: axios
Same weakness: CWE-1321

V. Comments for CVE-2026-67314

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