webpack buildHttp: allowedUris allow-list bypass via URL userinfo (@) leading to build-time SSRF behavior
Priority MEDIUM 51CWE-918Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Required
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Partial Red Hat: 5 fixed, 36 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.0023 13th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Partial webpack (webpack): 5.104.1webpack (npm): 5.104.1Red Hat: 5 advisoriesRed Hat: 5 fixed, 36 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| webpack | webpack | 5.49.0 to before 5.104.1 | 5.104.1 | Patch available | CNA |
| — | webpack (npm) | 5.49.0 to before 5.104.1 | 5.104.1 | Patch available | GHSA-8fgc-7cc6-rx7x |
- webpack Vendorwebpack Affected 5.49.0 to before 5.104.1 Fixed in 5.104.1 Patch available CNA
- webpack (npm) Vendor— Affected 5.49.0 to before 5.104.1 Fixed in 5.104.1 Patch available GHSA-8fgc-7cc6-rx7x
Remediation
- Fix · CNA webpack (webpack) Fixed in 5.104.1
- Fix · GHSA-8fgc-7cc6-rx7x webpack (npm) Fixed in 5.104.1 Advisory →
Red Hat 5 advisories
- RHSA-2026:83622 Released 2026-10-15 · Red Hat rating ImportantRed Hat OpenShift Data Foundation 4.17.28 security, enhancement & bug fix update
- Red Hat Openshift Data Foundation 4.17 registry.redhat.io/odf4/cephcsi-rhel9, registry.redhat.io/odf4/cephcsi-rhel9-operator, registry.redhat.io/odf4/mcg-core-rhel9 +16
- RHSA-2026:83619 Released 2026-10-15 · Red Hat rating ImportantRed Hat OpenShift Data Foundation 4.16.36 security, enhancement & bug fix update
- Red Hat Openshift Data Foundation 4.16 registry.redhat.io/odf4/cephcsi-rhel9, registry.redhat.io/odf4/mcg-core-rhel9, registry.redhat.io/odf4/mcg-rhel9-operator +15
- RHSA-2026:41944 Released 2026-07-20 · Red Hat rating ImportantRed Hat OpenShift Data Foundation 4.19.20 security, enhancement & bug fix update
- Red Hat Openshift Data Foundation 4.19 registry.redhat.io/odf4/cephcsi-rhel9, registry.redhat.io/odf4/cephcsi-rhel9-operator, registry.redhat.io/odf4/mcg-core-rhel9 +17
Show 2 more Red Hat advisories
- RHSA-2026:41941 Released 2026-07-20 · Red Hat rating ImportantRed Hat OpenShift Data Foundation 4.18.25 security, enhancement & bug fix update
- Red Hat Openshift Data Foundation 4.18 registry.redhat.io/odf4/cephcsi-rhel9, registry.redhat.io/odf4/cephcsi-rhel9-operator, registry.redhat.io/odf4/mcg-core-rhel9 +16
- RHSA-2026:40984 Released 2026-07-16 · Red Hat rating ImportantRed Hat OpenShift Data Foundation 4.20.15 security, enhancement & bug fix update
- Red Hat Openshift Data Foundation 4.20 registry.redhat.io/odf4/cephcsi-rhel9, registry.redhat.io/odf4/cephcsi-rhel9-operator, registry.redhat.io/odf4/mcg-core-rhel9 +19
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Cryostat 4 | Affected | No fix yet: Fix deferred |
| Gatekeeper 3 | Affected | No fix yet: Fix deferred |
| Logging Subsystem for Red Hat OpenShift | Affected | No fix yet: Fix deferred |
| Network Observability Operator | Affected | No fix yet: Fix deferred |
| Node HealthCheck Operator | Affected | No fix yet: Fix deferred |
| OpenShift Lightspeed | Affected | No fix yet: Fix deferred |
| OpenShift Pipelines | Affected | No fix yet: Fix deferred |
| OpenShift Service Mesh 2 | Affected | No fix yet: Fix deferred |
| OpenShift Service Mesh 3 | Affected | No fix yet: Fix deferred |
| Red Hat 3scale API Management Platform 2 | Affected | No fix yet: Fix deferred |
| Red Hat Advanced Cluster Security 4 | Affected | No fix yet: Fix deferred |
| Red Hat Ansible Automation Platform 2 | Affected | No fix yet: Fix deferred |
| Red Hat Data Grid 8 | Affected | No fix yet: Fix deferred |
| Red Hat Developer Hub 1 | Affected | No fix yet: Fix deferred |
| Red Hat Edge Manager 1 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux AI (RHEL AI) 3 | Affected | No fix yet: Fix deferred |
| Red Hat Fuse 7 | Affected | No fix yet: Fix deferred |
| Red Hat JBoss Enterprise Application Platform 8 | Affected | No fix yet: Fix deferred |
| Red Hat JBoss Enterprise Application Platform Expansion Pack | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift AI (RHOAI) | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift Dev Spaces | Affected | No fix yet: Fix deferred |
| Red Hat OpenShift GitOps | Affected | No fix yet: Fix deferred |
| Red Hat Process Automation 7 | Affected | No fix yet: Fix deferred |
| Red Hat Quay 3 | Affected | No fix yet: Fix deferred |
| Red Hat Satellite 6 | Affected | No fix yet: Fix deferred |
| Red Hat Trusted Artifact Signer | Affected | No fix yet: Fix deferred |
| Red Hat build of Apache Camel - HawtIO 4 | Affected | No fix yet: Fix deferred |
| Red Hat build of Apicurio Registry 2 | Affected | No fix yet: Fix deferred |
| Red Hat build of OptaPlanner 8 | Affected | No fix yet: Fix deferred |
| Self-service automation portal 2 | Affected | No fix yet: Fix deferred |
| streams for Apache Kafka 2 | Affected | No fix yet: Fix deferred |
| streams for Apache Kafka 3 | Affected | No fix yet: Fix deferred |
| Red Hat Openshift Data Foundation 4.16 | Fixed | RHSA-2026:83619 |
| Red Hat Openshift Data Foundation 4.17 | Fixed | RHSA-2026:83622 |
| Red Hat Openshift Data Foundation 4.18 | Fixed | RHSA-2026:41941 |
| Red Hat Openshift Data Foundation 4.19 | Fixed | RHSA-2026:41944 |
| Red Hat Openshift Data Foundation 4.20 | Fixed | RHSA-2026:40984 |
Not affected: 5 products
- Red Hat Openshift Data Foundation 4.16
- Red Hat Openshift Data Foundation 4.17
- Red Hat Openshift Data Foundation 4.18
- Red Hat Openshift Data Foundation 4.19
- Red Hat Openshift Data Foundation 4.20
Timeline
- 2026-10-02 Threatist record created from CVE-2025-68458
- 2026-10-03 Alias added: GHSA-8fgc-7cc6-rx7x
- 2026-10-16 Fix available: RHSA-2026:83619 · Red Hat
- 2026-10-16 Fix available: RHSA-2026:83622 · Red Hat
- 2026-10-16 Fix available: Red Hat Openshift Data Foundation 4.16, Red Hat Openshift Data Foundation 4.17 · Red Hat
- 2026-10-27 Affected versions changed · Red Hat
References
More Webpack vulnerabilities
- TI-2024-29382 DOM Clobbering Gadget found in Webpack's AutoPublicPathRuntimeModule that leads to Cross-site Scripting (XSS) CVSS 3.1MEDIUM 6.4
- TI-2023-12725 Webpack 5 before 5.76.0 does not avoid cross-realm object access. CVSS 3.1CRITICAL 9.8
- TI-2025-41737 webpack buildHttp HttpUriPlugin allowedUris bypass via HTTP redirects CVSS 3.1LOW 3.7
Sources
- CVE-2025-68458 · CVE Program
- CVE-2025-68458 · NVD
- FIRST EPSS
- GHSA-8fgc-7cc6-rx7x · GitHub Advisory Database · CC BY 4.0
- CVE-2025-68458 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences