vulnerability / NVI-00015280 / Revision 1
Axios: Prototype pollution auth subfields can inject Basic auth
GitHub lists this reviewed advisory for axios. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.
This report has not inspected your inventory, configuration, deployed build, reachability or evidence. A catalog listing and a severity score do not establish exposure or compromise.
01 / Meaning
Why it matters
Published affected context helps an owner decide what evidence to gather. This report has not examined your application.
02 / Applicability
The affected context
Affected versions, configuration prerequisites and known exclusions are public. Confirm each one against the deployed service.
axios
source listed>= 1.15.2, < 1.18.0
## Summary Axios versions after the `GHSA-q8qp-cvcw-x6jj` fix still contain prototype-pollution read-side gadgets in Basic auth subfield handling. If a host application is already affected by prototype pollution and then makes an axios request with an own `auth` object that omits `username` or `password`, axios reads inherited `Object.prototype.username` and `Object.prototype.password` values and uses them to construct an outbound `Authorization: Basic ...` header. This does not mean axios itself pollutes prototypes. Exploitation requires a separate prototype-pollution primitive in the host process, plus an axios call pattern such as `auth: opts.auth || {}`. ## Impact An attacker who can pollute `Object.prototype.username` and/or `Object.prototype.password` can influence the Basic auth header on affected axios requests that pass an empty or partial own `auth` object. The practical impact is outbound request tampering. The attacker can inject attacker-chosen Basic auth credentials, replace an existing `Authorization` header because axios removes it when `auth` is used, or cause downstream authorization failures. This should not be described as automatic credential exfiltration
03 / Response
What to do next
- investigate
Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.
Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. GitHub Advisory Database
A fixed release is not deployment evidence.
Check current vendor support and compatibility. After making a change, verify the deployed build and relevant runtime conditions. Keep the evidence, owner and time. An updated lockfile alone does not prove what is running.
04 / Limits
What this report cannot establish
- Customer inventory, deployment, reachability and exploitation have not been inspected.
05 / Provenance
Sources you can inspect
Each assertion retains its source. Mirrored records may repeat one underlying publisher; additional links are not independent corroboration.
- GHSA-xj6q-8x83-jv6g ↗
GitHub Advisory Database · vendor advisory
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Public revision history
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- Revision 1 ·
First indexed by Null; source disclosure date is shown separately.