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GHSA-f2r5-pqh9-r8f8

Duplicate Advisory: Axios: Prototype pollution gadgets can alter axios request construction

Medium Withdrawn Aug 31, 2026 npm
Severity
0.0 / 10
Medium · CVSS 4.0
Exploit chance (EPSS)
—
No score published
Known exploited
No
Not in CISA's catalog
Weakness
CWE-1321 Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Fix
None yet
No fixed version published

Description

Duplicate Advisory

This advisory has been withdrawn because it is a duplicate of GHSA-mmx7-hfxf-jppx. This link is maintained to preserve external references.

Original Description

axios is vulnerable to read-side prototype-pollution gadgets that can alter request construction when Object.prototype has already been polluted by a separate vulnerability or dependency. In the bodyless method aliases (axios.get(), axios.delete(), axios.head(), axios.options()), inherited data is read via (config || {}).data before config normalization, causing an attacker-controlled body to be sent on requests that did not set one. Additional low-level paths, only reachable when calling exported adapters/helpers (e.g. lib/adapters/http.js, unsafe/helpers/resolveConfig.js) directly with plain configs and no own proxy or paramsSerializer, can inherit polluted proxy values (routing requests through an attacker-controlled proxy) or paramsSerializer values (attacker-controlled URL serialization). These low-level gadgets do not reproduce through normal high-level axios calls on 1.15.2+. The issue is fixed in axios 1.18.0 and 0.33.0.

Affected versions

npm

PackageVulnerableFixed in
axios
all versions
No fix yet

How to fix

No fixed version has been published yet. Until one is, remove or replace the package, or turn off or isolate the affected feature. This page updates when a fix ships.

Severity breakdown

CVSS 4.0 0.0

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack vector
Network
Attack complexity
High
Attack requirements
Present
Privileges required
None
User interaction
None
Confidentiality (vulnerable system)
None
Integrity (vulnerable system)
Low
Availability (vulnerable system)
None
Confidentiality (subsequent systems)
None
Integrity (subsequent systems)
None
Availability (subsequent systems)
None
Exploit maturity
Not defined
Scope
X

Weakness

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.

How to prevent it
  • Implementation: By freezing the object prototype first (for example, Object.freeze(Object.prototype)), modification of the prototype becomes impossible.
  • Architecture and Design: By blocking modifications of attributes that resolve to object prototype, such as proto or prototype, this weakness can be mitigated.
  • Implementation: When handling untrusted objects, validating using a schema can be used.
  • Implementation: By using an object without prototypes (via Object.create(null) ), adding object prototype attributes by accessing the prototype via the special attributes becomes impossible, mitigating this weakness.
  • Implementation: Map can be used instead of objects in most cases. If Map methods are used instead of object attributes, it is not possible to access the object prototype or modify it.

References

Timeline

  1. Published
  2. Withdrawn
  3. Last updated by the source
AdvisorySeverityWhy it's related
GHSA-44g4-m2mj-wpvx
Axios: CIDR-form NO_PROXY entries are ignored, causing proxy exclusion bypass for internal IP ranges
Medium Also affects axios
GHSA-x97p-jq2g-jp4f
Axios: Prototype Pollution Gadget in axios toFormData Options
High Also affects axios
GHSA-vh66-26gq-q6x8
Axios: Prototype pollution gadget in fetch adapter can alter outbound requests
Medium Also affects axios
GHSA-r4gj-5m52-g5wh
Axios: maxRedirects: 0 is not enforced by the fetch adapter, allowing redirect-based SSRF
High Also affects axios
GHSA-mghh-pgcx-3jjj
Axios: ReDoS (O(N²)) in shouldBypassProxy host normalization, reachable via untrusted redirect Location
High Also affects axios
GHSA-m8m8-qj5v-23w3
Axios: Node HTTP adapter prototype-pollution gadget allows request socket hijack via inherited createConnection
High Also affects axios
GHSA-j8rh-479h-cp32
Axios: Header Injection via Inherited headers After Minimal Interceptor
Medium Also affects axios
GHSA-c29m-xwm3-cm6r
Axios: ReDoS in fromDataURI data: URL parser freezes the Node event loop (DoS)
High Also affects axios
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