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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-55553 Detail

Description

urllib is an HTTP client for Node.js that supports authentication, redirects, timeouts, and other request features. Prior to 4.9.1 and 2.44.1, urllib follows redirects through followRedirect but reuses caller-supplied options across origins. In src/HttpClient.ts, #requestInternal recursively calls this.#requestInternal(nextUrl.href, options, requestContext), causing options.headers and auth or digestAuth values to be reused when the redirect target has a different scheme, host, or port. Authorization, Cookie, Proxy-Authorization, x-api-key, x-auth-token, and x-access-token can therefore be sent to an attacker-controlled redirected origin, exposing credentials intended for the original origin and potentially allowing reuse against the original partner API or related services. No user interaction is required. This issue is fixed in versions 2.44.1 and 4.9.1.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/node-modules/urllib/commit/7c86c465883ebd3dea5109c87d7bbe3b00960a16 GitHub, Inc.
https://github.com/node-modules/urllib/commit/811a8d56e64e540bf6a19bf8b3737692f05d5c46 GitHub, Inc.
https://github.com/node-modules/urllib/pull/812 GitHub, Inc.
https://github.com/node-modules/urllib/pull/813 GitHub, Inc.
https://github.com/node-modules/urllib/releases/tag/v2.44.1 GitHub, Inc.
https://github.com/node-modules/urllib/releases/tag/v4.9.1 GitHub, Inc.
https://github.com/node-modules/urllib/security/advisories/GHSA-hq3h-g68c-hp78 CISA-ADP, GitHub, Inc.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor GitHub, Inc.  
CWE-201 Insertion of Sensitive Information Into Sent Data GitHub, Inc.  
CWE-522 Insufficiently Protected Credentials GitHub, Inc.  

Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-55553
NVD Published Date:
08/25/2026
NVD Last Modified:
08/25/2026
Source:
GitHub, Inc.