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CVE-2025-30359

19
FAUCET Score

CVE-2025-30359 is a source code disclosure vulnerability affecting webpack-dev-server prior to version 5.2.1. An attacker can steal a user's source code by injecting a malicious script on their website, leveraging the fact that script tag requests bypass same-origin policy. This vulnerability has a CVSS score of 5.9 (Medium), indicating a network-based attack with high complexity but high confidentiality impact. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 5.2.1CPE matchmatch criteria
cpe:2.3:a:webpack.js:webpack-dev-server:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.3MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.6
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.43%
Probability of exploitation in next 30 days
EPSS Percentile
35.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0043 is in the 4th percentile among its peer group of 19,956 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (66)

github_advisorypatch availablevia nvd_reference
View patch
npmpatch availablevia ghsa
Product: webpack-dev-serverFixed in: 5.2.1
redhatvendor investigatingvia redhat_api
Product: Cryostat 4Fixed in: io.cryostat-cryostat
redhatvendor investigatingvia redhat_api
Product: Migration Toolkit for VirtualizationFixed in: mtv-candidate/mtv-console-plugin-rhel9
redhatvendor investigatingvia redhat_api
Product: Network Observability OperatorFixed in: network-observability/network-observability-console-plugin-rhel9
redhatvendor investigatingvia redhat_api
Product: OpenShift LightspeedFixed in: openshift-lightspeed-tech-preview/lightspeed-console-plugin-rhel9
redhatvendor investigatingvia redhat_api
Product: OpenShift PipelinesFixed in: openshift-pipelines/pipelines-console-plugin-rhel8
redhatvendor investigatingvia redhat_api
Product: OpenShift PipelinesFixed in: openshift-pipelines/pipelines-console-plugin-rhel9
redhatvendor investigatingvia redhat_api
Product: OpenShift PipelinesFixed in: openshift-pipelines/pipelines-hub-api-rhel8
redhatvendor investigatingvia redhat_api
Product: OpenShift PipelinesFixed in: openshift-pipelines/pipelines-hub-api-rhel9
redhatvendor investigatingvia redhat_api
Product: OpenShift PipelinesFixed in: openshift-pipelines/pipelines-hub-db-migration-rhel8
redhatvendor investigatingvia redhat_api
Product: OpenShift PipelinesFixed in: openshift-pipelines/pipelines-hub-db-migration-rhel9
redhatvendor investigatingvia redhat_api
Product: OpenShift PipelinesFixed in: openshift-pipelines/pipelines-hub-ui-rhel8
redhatvendor investigatingvia redhat_api
Product: OpenShift PipelinesFixed in: openshift-pipelines/pipelines-hub-ui-rhel9
redhatvendor investigatingvia redhat_api
Product: OpenShift ServerlessFixed in: openshift-serverless-1/kn-backstage-plugins-eventmesh-rhel8
redhatvendor investigatingvia redhat_api
Product: OpenShift Service Mesh 3Fixed in: openshift-service-mesh/kiali-operator-bundle
redhatvendor investigatingvia redhat_api
Product: OpenShift Service Mesh 3Fixed in: openshift-service-mesh/kiali-ossmc-rhel9
redhatvendor investigatingvia redhat_api
Product: OpenShift Service Mesh 3Fixed in: openshift-service-mesh/kiali-rhel9
redhatvendor investigatingvia redhat_api
Product: OpenShift Service Mesh 3Fixed in: openshift-service-mesh/kiali-rhel9-operator
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-24/lightspeed-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: ansible-automation-platform-25/lightspeed-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: automation-controller
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: automation-eda-controller
redhatvendor investigatingvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: automation-gateway
redhatvendor investigatingvia redhat_api
Product: Red Hat build of Apache Camel - HawtIO 4Fixed in: io.hawt-project
redhatvendor investigatingvia redhat_api
Product: Red Hat build of Apicurio Registry 2Fixed in: io.apicurio-apicurio-registry
redhatvendor investigatingvia redhat_api
Product: Red Hat build of OptaPlanner 8Fixed in: org.optaweb.vehiclerouting-optaweb-vehicle-routing
redhatvendor investigatingvia redhat_api
Product: Red Hat Certification for Red Hat Enterprise Linux 7Fixed in: redhat-certification
redhatvendor investigatingvia redhat_api
Product: Red Hat Data Grid 8Fixed in: org.infinispan-infinispan-console
redhatvendor investigatingvia redhat_api
Product: Red Hat Developer HubFixed in: rhdh/rhdh-hub-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat Developer HubFixed in: rhdh/rhdh-rhel9-operator
redhatvendor investigatingvia redhat_api
Product: Red Hat Discovery 1Fixed in: discovery/discovery-ui-rhel9
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 10Fixed in: grafana
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 10Fixed in: js-d3-flame-graph
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 10Fixed in: pcs
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: grafana
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: js-d3-flame-graph
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: pcs
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: grafana
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: js-d3-flame-graph
redhatvendor investigatingvia redhat_api
Product: Red Hat Enterprise Linux 9Fixed in: pcs
redhatvendor investigatingvia redhat_api
Product: Red Hat Fuse 7Fixed in: io.apicurio-apicurito
redhatvendor investigatingvia redhat_api
Product: Red Hat Fuse 7Fixed in: io.syndesis-syndesis-parent
redhatvendor investigatingvia redhat_api
Product: Red Hat Integration Camel K 1Fixed in: io.apicurio-apicurio-registry
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift AI (RHOAI)Fixed in: rhoai/odh-dashboard-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift AI (RHOAI)Fixed in: rhoai/odh-data-science-pipelines-argo-argoexec-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift AI (RHOAI)Fixed in: rhoai/odh-data-science-pipelines-argo-workflowcontroller-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift AI (RHOAI)Fixed in: rhoai/odh-rhel8-operator
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift AI (RHOAI)Fixed in: rhods/odh-dashboard-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift AI (RHOAI)Fixed in: rhods/odh-rhel8-operator
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift distributed tracing 3Fixed in: rhosdt/jaeger-agent-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift distributed tracing 3Fixed in: rhosdt/jaeger-all-in-one-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift distributed tracing 3Fixed in: rhosdt/jaeger-collector-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift distributed tracing 3Fixed in: rhosdt/jaeger-es-index-cleaner-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift distributed tracing 3Fixed in: rhosdt/jaeger-es-rollover-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift distributed tracing 3Fixed in: rhosdt/jaeger-ingester-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift distributed tracing 3Fixed in: rhosdt/jaeger-operator-bundle
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift distributed tracing 3Fixed in: rhosdt/jaeger-query-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift distributed tracing 3Fixed in: rhosdt/jaeger-rhel8-operator
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift distributed tracing 3Fixed in: rhosdt/tempo-gateway-opa-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift distributed tracing 3Fixed in: rhosdt/tempo-jaeger-query-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift distributed tracing 3Fixed in: rhosdt/tempo-operator-bundle
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift distributed tracing 3Fixed in: rhosdt/tempo-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat Process Automation 7Fixed in: org.uberfire-uberfire-parent
redhatvendor investigatingvia redhat_api
Product: Red Hat Quay 3Fixed in: quay/quay-rhel8
redhatvendor investigatingvia redhat_api
Product: Red Hat Trusted Profile AnalyzerFixed in: rhtpa/rhtpa-trustification-service-rhel9

Vendor Advisories (3)

microsoft2025-Jun/CVE-2025-30359Moderate

webpack-dev-server users' source code may be stolen when they access a malicious web site

Jun 10, 2025
npmGHSA-4v9v-hfq4-rm2vmedium

webpack-dev-server users' source code may be stolen when they access a malicious web site

Jun 4, 2025
redhatCVE-2025-30359Moderate

webpack-dev-server: webpack-dev-server information exposure

Jun 3, 2025

References

github.com / webpack/webpack-dev-server/commit/d2575ad8dfed9207ed810b5ea0ccf465115a2239
Patch
github.com / webpack/webpack-dev-server/security/advisories/GHSA-4v9v-hfq4-rm2v
ExploitVendor Advisory