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Fencer Vulns
high 7.5

CVE-2026-84292 json

fast-uri vulnerable to authority injection via an unvalidated port in serialize

published 2026-09-02 2 mo ago modified 2026-10-06 33 d ago also GHSA-qw65-cvwx-89v3 , EUVD-2026-70280

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 15%
public exploits
0
none known

Summary

fast-uri serializes the port component of a URI without validating it. When recomposing the authority, the userinfo and host components are escaped but the port is concatenated verbatim, so a port value that is not a sequence of digits can inject authority delimiters, demoting the intended host to userinfo and pointing the authority at an attacker-controlled host. Both fast-uri and Node's URL read the result back as the attacker's host with no error, so re-validating the built URI does not catch it. This affects applications that build URIs from parts and assign untrusted data to the port component through the serialize, normalize, or equal functions in their object forms. The issue affects fast-uri versions before 2.4.6, from 3.0.0 before 3.1.7, and from 4.0.0 before 4.1.4. It is fixed in 2.4.6, 3.1.7, and 4.1.4, where recomposeAuthority rejects any port that is not a digit sequence per RFC 3986.

Patch / fix

  • npm fast-uri 2.4.6, 3.1.7, 4.1.4
  • fast-uri fast-uri 2.4.6, 3.1.7, 4.1.4
  • node-ajv Debian 14 8.20.0~ds+~cs7.1.5-1

debian advisories DEBIAN-CVE-2026-84292

  • foreman satellite utils 6.19, satellite capsule 6.19, satellite 6.19 3.18.0.14-1.el9sat
  • foreman-cli satellite utils 6.19, satellite 6.19 3.18.0.14-1.el9sat
  • foreman-ec2 satellite 6.19 3.18.0.14-1.el9sat
  • foreman-pcp satellite capsule 6.19, satellite 6.19 3.18.0.14-1.el9sat
  • foreman-redis satellite 6.19 3.18.0.14-1.el9sat
  • foreman-vmware satellite 6.19 3.18.0.14-1.el9sat
  • foreman-libvirt satellite 6.19 3.18.0.14-1.el9sat
  • foreman-service satellite 6.19 3.18.0.14-1.el9sat

red hat advisories RHSA-2026:74503RHSA-2026:71543RHSA-2026:65617RHSA-2026:65537RHSA-2026:63782

  • cockpit-image-builder AlmaLinux 10 94.4-1.el10_2

almalinux advisories ALSA-2026:71543

  • cockpit-image-builder Rocky Linux 10 94.4-1.el10_2

rocky linux advisories RLSA-2026:71543

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-84292 updated cvss 7.5

fast-uri: fast-uri: Authority Injection via Unvalidated Port Serialization

  • Red Hat Multicluster Engine for Kubernetes multicluster-engine/console-mce-rhel9 Red Hat OpenShift Lightspeed openshift-lightspeed/lightspeed-console-plugin-rhel9, openshift-lightspeed/lightspeed-agentic-console-rhel9, openshift-lightspeed/lightspeed-console-plugin-419-rhel9, openshift-lightspeed/lightspeed-console-plugin-pf5-rhel9
    affected: workaround, no fix available
  • Red Hat OpenShift Pipelines openshift-pipelines/pipelines-hub-ui-rhel8, openshift-pipelines/pipelines-hub-ui-rhel9, openshift-pipelines/pipelines-console-plugin-rhel9, openshift-pipelines/pipelines-console-plugin-pf5-rhel9
    affected: workaround, no fix available, no fix planned “Will not fix”
  • Red Hat OpenShift Serverless openshift-serverless-1/kn-eventing-integrations-log-sink-rhel9, openshift-serverless-1/kn-eventing-integrations-aws-s3-sink-rhel9, openshift-serverless-1/kn-eventing-integrations-aws-sns-sink-rhel9, openshift-serverless-1/kn-eventing-integrations-aws-sqs-sink-rhel9, openshift-serverless-1/kn-eventing-integrations-timer-source-rhel9, openshift-serverless-1/kn-eventing-integrations-aws-s3-source-rhel9, +3 more Red Hat Advanced Cluster Management for Kubernetes 2 rhacm2/console-rhel9
    affected: workaround, no fix available
  • Red Hat Ansible Automation Platform 2 ansible-automation-platform-24/lightspeed-rhel8
    affected: workaround, no fix planned “Will not fix”
  • Red Hat build of Apache Camel - HawtIO 4 rhaf-hawtio-maven-repository.zip Red Hat build of Apicurio Registry 3 apicurio/apicurio-registry-ui-rhel8, apicurio/apicurio-registry-ui-rhel9 Red Hat Build of Podman Desktop rh-podman-desktop.git Red Hat Connectivity Link 1 rhcl-1/rhcl-console-plugin-rhel9 Red Hat Enterprise Linux 9 sgx-mpa, tdx-qgs, sgx-libs, sgx-pccs, sgx-common, sgx-pccs-admin, +2 more Red Hat Enterprise Linux 10 linux-sgx 2.26-7.el10
    affected: workaround, no fix available
  • Red Hat Enterprise Linux AI (RHEL AI) 3 rhelai3/bootc-cuda-rhel9, rhelai3/bootc-rocm-rhel9, rhelai3/bootc-gaudi-rhel9, rhelai3/disk-image-cuda-rhel9
    affected: workaround, no fix available, no fix planned “Will not fix”
  • Red Hat OpenShift AI (RHOAI) rhoai/odh-core-bff-rhel9, rhoai/odh-dashboard-operator-rhel9, rhoai/odh-mod-arch-agent-ops-rhel9 Red Hat OpenShift Container Platform 5 openshift5/ose-monitoring-plugin-rhel9, openshift5/nmstate-console-plugin-rhel9 Red Hat Openshift Data Foundation 4 odf4/mcg-core-rhel9, odf4/ocs-client-console-rhel9, rhceph-dev/odf4-mcg-core-rhel9, rhceph-dev/odf4-odf-console-rhel9, odf4/odf-multicluster-console-rhel9, rhceph-dev/odf4-ocs-client-console-rhel9, +1 more Red Hat Satellite 6 nodejs-webpack 5.104.1-1.el9sat, nodejs-mini-css-extract-plugin 2.10.0-1.el9sat
    affected: workaround, no fix available
  • Red Hat Secrets Management Console for Red Hat OpenShift external-secrets-management/console-plugin-rhel9
    affected: workaround, no fix planned “Will not fix”
show 22 more
  • Red Hat Cluster Observability Operator 1.5 cluster-observability-operator/distributed-tracing-console-plugin-rhel9 1793661918, cluster-observability-operator/distributed-tracing-console-plugin-rhel9 1793824908, cluster-observability-operator/troubleshooting-panel-console-plugin-rhel9 1790854494, cluster-observability-operator/distributed-tracing-console-plugin-pf4-rhel9 1793661804, cluster-observability-operator/distributed-tracing-console-plugin-pf4-rhel9 1793823428, cluster-observability-operator/distributed-tracing-console-plugin-pf5-rhel9 1793664067, +3 more
    fixed: vendor fix RHSA-2026:95591
  • Red Hat Network Observability (NETOBSERV) 1.12.3 network-observability/network-observability-console-plugin-rhel9 1789978277, network-observability/network-observability-console-plugin-pf5-rhel9 1789978780
    fixed: vendor fix RHSA-2026:70593
  • Red Hat Ansible Automation Platform 2.1 ansible-automation-platform/automation-portal 1788775748
    fixed: vendor fix RHSA-2026:65118
  • Red Hat Ansible Automation Platform 2.2 ansible-automation-platform/automation-portal 1788783591, ansible-automation-platform/bootc-automation-portal-rhel9 1791865660
    fixed: vendor fix RHSA-2026:65155
  • Red Hat Ansible Automation Platform 2.5 ansible-automation-platform-25/lightspeed-rhel8 1789685837
    fixed: vendor fix RHSA-2026:71210
  • Red Hat Ansible Automation Platform 2.6 ansible-automation-platform-26/lightspeed-rhel9 1789656884, ansible-automation-platform-tech-preview/mcp-server-rhel9 1789669036
    fixed: vendor fix RHSA-2026:71179
  • Red Hat Ansible Automation Platform 2.7 ansible-automation-platform-27/mcp-server-rhel9 1789518969
    fixed: vendor fix RHSA-2026:71177
  • Red Hat Cost Management On-Premise 1 costmanagement/costmanagement-ui-rhel10 1791460851
    fixed: vendor fix RHSA-2026:79357
  • Red Hat Developer Hub 1.9 rhdh/rhdh-hub-rhel9 1789554285
    fixed: vendor fix RHSA-2026:69248
  • Red Hat Developer Hub 1.10 rhdh/rhdh-hub-rhel9 1791311495, rhdh/red-hat-developer-hub-backstage-plugin-orchestrator 1791250003, rhdh/red-hat-developer-hub-backstage-plugin-lightspeed-backend 1791242697, rhdh/red-hat-developer-hub-backstage-plugin-orchestrator-backend 1791251282, rhdh/red-hat-developer-hub-backstage-plugin-orchestrator-form-widgets 1791250794, rhdh/red-hat-developer-hub-backstage-plugin-orchestrator-backend-module-loki 1791250355, +1 more
    fixed: vendor fix RHSA-2026:76788
  • Red Hat Discovery 2 discovery/discovery-ui-rhel9 1789677459
    fixed: vendor fix RHSA-2026:69289
  • Red Hat Edge Manager 1.1 rhem/flightctl-ui-rhel10 1789486181, rhem/flightctl-ui-ocp-rhel9 1789486446, rhem/flightctl-ui-ocp-rhel10 1789486226
    fixed: vendor fix RHSA-2026:68044
  • Red Hat Edge Manager 1.2 rhem/flightctl-ui-rhel9 1789486750, rhem/flightctl-ui-rhel10 1789488111, rhem/flightctl-ui-ocp-rhel9 1789486476, rhem/flightctl-ui-ocp-rhel10 1789485920
    fixed: vendor fix RHSA-2026:68006
  • Red Hat Edge Manager 1.3 rhem/flightctl-ui-rhel9 1790702256, rhem/flightctl-ui-rhel10 1790701777, rhem/flightctl-ui-ocp-rhel9 1790702819, rhem/flightctl-ui-ocp-rhel10 1790701768
    fixed: vendor fix RHSA-2026:73807
  • Red Hat Enterprise Linux AppStream (v. 10) cockpit-image-builder 94.4-1.el10_2
    fixed: vendor fix RHSA-2026:71543
  • Red Hat Hardened Images grafana12.4 12.4.9-0.6.hum1, grafana13.1 13.1.3-0.6.hum1, grafana13.2 13.2.1-0.2.hum1
    fixed: vendor fix RHSA-2026:63782
  • Red Hat Migration Toolkit 1.8 rhmtc/openshift-migration-ui-rhel8 1789546373
    fixed: vendor fix RHSA-2026:68681
  • Red Hat OpenShift AI 2.25 rhoai/odh-dashboard-rhel9 1791853525, rhoai/odh-feature-server-rhel9 1792148523, rhoai/odh-mod-arch-model-registry-rhel9 1791853432, rhoai/odh-workbench-codeserver-datascience-cpu-py312-rhel9 1791288400
    fixed: vendor fix RHSA-2026:87410
  • Red Hat OpenShift AI 3.4 rhoai/odh-dashboard-rhel9 1791861020, rhoai/odh-mod-arch-maas-rhel9 1791860708, rhoai/odh-feature-server-rhel9 1791863220, rhoai/odh-mod-arch-automl-rhel9 1791861032, rhoai/odh-mod-arch-gen-ai-rhel9 1791861479, rhoai/odh-mod-arch-mlflow-rhel9 1791861383, +3 more
    fixed: vendor fix RHSA-2026:84734
  • Red Hat OpenShift AI 3.5 rhoai/odh-workbench-codeserver-datascience-cpu-py312-rhel9 1791825469
    fixed: vendor fix RHSA-2026:86891
  • Red Hat OpenShift Container Platform 4.16 openshift4/ose-monitoring-plugin-rhel9 1792881187
    fixed: vendor fix RHSA-2026:89715
  • Red Hat OpenShift Container Platform 4.18 openshift4/nmstate-console-plugin-rhel9 1790828012
    fixed: vendor fix RHSA-2026:79040

12 more fixed, 43 more not affected in the full advisory

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
2 mo ago

Exploit prediction

0.24% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected packages

ecosystem package affected fixed in
npm fast-uri
<2.4.6
>=3.0.0, <3.1.7
>=4.0.0, <4.1.4
2.4.6
3.1.7
4.1.4

Affected products

  • fast-uri fast-uri

Classification

Weakness
  • CWE-116 Improper Encoding or Escaping of Output

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.