Webpack is a module bundler. From version 5.49.0 to before 5.104.1, when experiments.buildHttp is enabled, webpack’s HTTP(S) resolver (HttpUriPlugin) can be bypassed to fetch resources from hosts outside allowedUris by using crafted URLs that include userinfo (username:password@host). If allowedUris enforcement relies on a raw string prefix check (e.g., uri.startsWith(allowed)), a URL that looks allow-listed can pass validation while the actual network request is sent to a different authority/host after URL parsing. This is a policy/allow-list bypass that enables build-time SSRF behavior (outbound requests from the build machine to internal-only endpoints, depending on network access) and untrusted content inclusion (the fetched response is treated as module source and bundled). This issue has been patched in version 5.104.1.
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-8fgc-7cc6-rx7x webpack buildHttp: allowedUris allow-list bypass via URL userinfo (@) leading to build-time SSRF behavior
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Fri, 06 Feb 2026 21:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 06 Feb 2026 12:15:00 +0000

Type Values Removed Values Added
First Time appeared Webpack
Webpack webpack
Vendors & Products Webpack
Webpack webpack

Thu, 05 Feb 2026 23:15:00 +0000

Type Values Removed Values Added
Description Webpack is a module bundler. From version 5.49.0 to before 5.104.1, when experiments.buildHttp is enabled, webpack’s HTTP(S) resolver (HttpUriPlugin) can be bypassed to fetch resources from hosts outside allowedUris by using crafted URLs that include userinfo (username:password@host). If allowedUris enforcement relies on a raw string prefix check (e.g., uri.startsWith(allowed)), a URL that looks allow-listed can pass validation while the actual network request is sent to a different authority/host after URL parsing. This is a policy/allow-list bypass that enables build-time SSRF behavior (outbound requests from the build machine to internal-only endpoints, depending on network access) and untrusted content inclusion (the fetched response is treated as module source and bundled). This issue has been patched in version 5.104.1.
Title webpack buildHttp: allowedUris allow-list bypass via URL userinfo (@) leading to build-time SSRF behavior
Weaknesses CWE-918
References
Metrics cvssV3_1

{'score': 3.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-02-06T20:26:59.798Z

Reserved: 2025-12-17T20:22:35.081Z

Link: CVE-2025-68458

cve-icon Vulnrichment

Updated: 2026-02-06T20:26:54.305Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-02-05T23:15:53.940

Modified: 2026-02-06T15:14:47.703

Link: CVE-2025-68458

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-02-06T12:04:57Z

Weaknesses