CVE-2026-44494

Aliases:GHSA-35jp-ww65-95wh
Advisory lineage Upstream: 0 Downstream: 2
Analyzed
Published: 11 Jun 2026, 15:32
Last modified:22 Jul 2026, 12:08

Vulnerability Summary

Overall Risk (default)
medium
45/100
CVSS Score
8.7 HIGH
v3.1 (cve.org)
EPSS Score
1.04% LOW
1% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

11 Jun 2026, 15:32
Published
Vulnerability first disclosed
22 Jul 2026, 12:08
Last Modified
Vulnerability information updated

Description

Axios is a promise based HTTP client for the browser and Node.js. From 1.0.0 to before 1.16.0, the 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 a full Man-in-the-Middle (MITM) attack — intercepting, reading, and modifying all HTTP traffic including authentication credentials. The HTTP adapter at lib/adapters/http.js:670 reads config.proxy via standard property access, which traverses the prototype chain. Because proxy is not present in Axios defaults, the merged config object has no own proxy property, making it trivially injectable via prototype pollution. Once injected, setProxy() routes all HTTP requests through the attacker's proxy server. This vulnerability is fixed in 1.16.0.

CVSS Metrics

  • v3.1•HIGH•Score: 8.7CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

EPSS Trends

Current EPSS score: 1.04%• Percentile: 60%

Techniques & Countermeasures

  • CWE-441•Unintended Proxy or Intermediary ('Confused Deputy')

    The product receives a request, message, or directive from an upstream component, but the product does not sufficiently preserve the original source of the request before forwarding the request to an external actor that is outside of the product's control sphere. This causes the product to appear to be the source of the request, leading it to act as a proxy or other intermediary between the upstream component and the external actor.

  • CWE-1321•Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

    The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype.

  • CWE-915•Improperly Controlled Modification of Dynamically-Determined Object Attributes

    The product receives input from an upstream component that specifies multiple attributes, properties, or fields that are to be initialized or updated in an object, but it does not properly control which attributes can be modified.

Affected Systems

  • axios•axios

    ≥ 1.0.0, < 1.16.0

  • Npm•axios

    ≥ 1.0.0, < 1.16.0

References (51)