Webpack 5 before 5.76.0 does not avoid cross-realm object access.
Priority MEDIUM 52Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Partial Red Hat: 3 fixed, 5 without a fix
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA, GitHub and Red Hat.
Summary
Webpack 5 before 5.76.0 does not avoid cross-realm object access. ImportParserPlugin.js mishandles the magic comment feature. An attacker who controls a property of an untrusted object can obtain access to the real global object.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01409 72nd percentileScored 2026-11-07
Fix Partial webpack (npm): 5.76.0Red Hat: 1 advisoryRed Hat: 3 fixed, 5 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
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 |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | webpack (npm) | 5.0.0 to before 5.76.0 | 5.76.0 | Patch available | GHSA-hc6q-2mpp-qw7j |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- webpack (npm) Vendor— Affected 5.0.0 to before 5.76.0 Fixed in 5.76.0 Patch available GHSA-hc6q-2mpp-qw7j
Remediation
- Fix · GHSA-hc6q-2mpp-qw7j webpack (npm) Fixed in 5.76.0 Advisory →
Red Hat 1 advisory
- RHSA-2023:1591 Released 2023-04-04 · Red Hat rating Importantpcs security update
- Red Hat Enterprise Linux High Availability (v. 9) pcs-0.11.3-4.el9_1.3, pcs-snmp-0.11.3-4.el9_1.3
- Red Hat Enterprise Linux Resilient Storage (v. 9) pcs-0.11.3-4.el9_1.3, pcs-snmp-0.11.3-4.el9_1.3
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| OpenShift Developer Tools and Services | Affected | No fix yet |
| Red Hat A-MQ Online | Affected | No fix yet |
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet |
| Red Hat OpenShift Dev Spaces | Affected | No fix yet |
| Red Hat Quay 3 | Affected | No fix yet |
| OpenShift Pipelines version 1.10 for RHEL 8 | Fixed | — |
| Red Hat Enterprise Linux High Availability (v. 9) | Fixed | RHSA-2023:1591 |
| Red Hat Enterprise Linux Resilient Storage (v. 9) | Fixed | RHSA-2023:1591 |
Not affected: 16 products
- OpenShift Pipelines version 1.10 for RHEL 8
- OpenShift Service Mesh 2.1
- Red Hat Ansible Automation Platform 2
- Red Hat Data Grid 8
- Red Hat Decision Manager 7
- Red Hat Enterprise Linux 6
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat Fuse 7
- Red Hat Integration Camel K 1
- Red Hat JBoss Enterprise Application Platform 7
- Red Hat JBoss Enterprise Application Platform Expansion Pack
- Red Hat Process Automation 7
- Red Hat Satellite 6
- Red Hat build of Apicurio Registry 2
Timeline
- 2026-10-02 Threatist record created from CVE-2023-28154
- 2026-10-03 Alias added: GHSA-hc6q-2mpp-qw7j
References
Patch 2
Advisory 4
Other 3
- https://lists.fedoraproject.org/archives/list/[email protected]/message/AU7BOXTBK3KDYSWH67ASZ22TUIOZ3X5G
- https://lists.fedoraproject.org/archives/list/[email protected]/message/PPSAXUTXBCCTAHTCX5BUR4YVP25XALQ3
- https://lists.fedoraproject.org/archives/list/[email protected]/message/U2AFCM6FFE3LRYI6KNEQWKMXMQOBZQ2D
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-2025-41991 webpack buildHttp: allowedUris allow-list bypass via URL userinfo (@) leading to build-time SSRF behavior CVSS 3.1LOW 3.7
- TI-2025-41737 webpack buildHttp HttpUriPlugin allowedUris bypass via HTTP redirects CVSS 3.1LOW 3.7
Sources
- CVE-2023-28154 · CVE Program
- CVE-2023-28154 · NVD
- FIRST EPSS
- GHSA-hc6q-2mpp-qw7j · GitHub Advisory Database · CC BY 4.0
- CVE-2023-28154 · 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