fast-uri vulnerable to authority injection via an unvalidated port in serialize
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Partial Red Hat: 34 fixed, 18 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat.
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- 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 |
|---|---|---|---|---|---|
| fast-uri | fast-uri | before 2.4.6; 3.0.0 to before 3.1.7; 4.0.0 to before 4.1.4 | 2.4.6, 3.1.7, 4.1.4 | Patch available | CNA |
| — | fast-uri (npm) | before 2.4.6 | 2.4.6 | Patch available | GHSA-qw65-cvwx-89v3 |
| — | fast-uri (npm) | 3.0.0 to before 3.1.7 | 3.1.7 | Patch available | GHSA-qw65-cvwx-89v3 |
| — | fast-uri (npm) | 4.0.0 to before 4.1.4 | 4.1.4 | Patch available | GHSA-qw65-cvwx-89v3 |
- fast-uri Vendorfast-uri Affected before 2.4.6; 3.0.0 to before 3.1.7; 4.0.0 to before 4.1.4 Fixed in 2.4.6, 3.1.7, 4.1.4 Patch available CNA
- fast-uri (npm) Vendor— Affected before 2.4.6 Fixed in 2.4.6 Patch available GHSA-qw65-cvwx-89v3
- fast-uri (npm) Vendor— Affected 3.0.0 to before 3.1.7 Fixed in 3.1.7 Patch available GHSA-qw65-cvwx-89v3
- fast-uri (npm) Vendor— Affected 4.0.0 to before 4.1.4 Fixed in 4.1.4 Patch available GHSA-qw65-cvwx-89v3
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:openjsf:fast-uri:*:*:*:*:*:node.js:*:* | before 2.4.6; 3.0.0 to before 3.1.7; 4.0.0 to before 4.1.4 | Vulnerable | fast-uri |
- cpe:2.3:a:openjsf:fast-uri:*:*:*:*:*:node.js:*:* Versions before 2.4.6; 3.0.0 to before 3.1.7; 4.0.0 to before 4.1.4 Vulnerable ·fast-uri
Remediation
- Fix · CNA fast-uri (fast-uri) Fixed in 2.4.6, 3.1.7, 4.1.4
- Fix · GHSA-qw65-cvwx-89v3 fast-uri (npm) Fixed in 2.4.6 Advisory →
- Fix · GHSA-qw65-cvwx-89v3 fast-uri (npm) Fixed in 3.1.7 Advisory →
- Fix · GHSA-qw65-cvwx-89v3 fast-uri (npm) Fixed in 4.1.4 Advisory →
Red Hat 53 advisories
- RHSA-2026:95591 Released 2026-11-05 · Red Hat rating ImportantCluster Observability Operator - 1.5
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- RHSA-2026:95081 Released 2026-11-04 · Red Hat rating ImportantCluster Observability Operator - 1.5
- Cluster Observability Operator 1.5 registry.redhat.io/cluster-observability-operator/alertmanager-rhel9, registry.redhat.io/cluster-observability-operator/cluster-observability-rhel9-operator, registry.redhat.io/cluster-observability-operator/distributed-tracing-console-plugin-pf4-rhel9 +16
- RHSA-2026:92650 Released 2026-10-29 · Red Hat rating ImportantRed Hat OpenShift Data Foundation 4.19.26 security, enhancement & bug fix update
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Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
fast-uri 2.4.6, 3.1.7, 4.1.4
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2026-58005 fast-uri vulnerable to host confusion via an unclosed bracket in the URI authorityPriority LOW 39
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Multicluster Engine for Kubernetes | Affected | No fix yet |
| OpenShift Lightspeed | Affected | No fix yet |
| OpenShift Pipelines | Affected | No fix yet |
| OpenShift Serverless | Affected | No fix yet |
| Red Hat Advanced Cluster Management for Kubernetes 2 | Affected | No fix yet |
| Red Hat Ansible Automation Platform 2 | Affected | No fix planned: Will not fix |
| Red Hat Build of Podman Desktop | Affected | No fix yet |
| Red Hat Connectivity Link 1 | Affected | No fix yet |
| Red Hat Enterprise Linux 10 | Affected | No fix yet |
| Red Hat Enterprise Linux 9 | Affected | No fix yet |
| Red Hat Enterprise Linux AI (RHEL AI) 3 | Affected | No fix yet |
| Red Hat OpenShift AI (RHOAI) | Affected | No fix yet |
| Red Hat OpenShift Container Platform 5 | Affected | No fix yet |
| Red Hat Openshift Data Foundation 4 | Affected | No fix yet |
| Red Hat Satellite 6 | Affected | No fix yet |
| Red Hat build of Apache Camel - HawtIO 4 | Affected | No fix yet |
| Red Hat build of Apicurio Registry 3 | Affected | No fix yet |
| Secrets Management Console for Red Hat OpenShift | Affected | No fix planned: Will not fix |
| Cluster Observability Operator 1.5 | Fixed | RHSA-2026:74609, RHSA-2026:95081, RHSA-2026:95591 |
| Network Observability (NETOBSERV) 1.12.3 | Fixed | RHSA-2026:70593 |
| Red Hat Ansible Automation Platform 2.1 | Fixed | RHSA-2026:65118 |
| Red Hat Ansible Automation Platform 2.2 | Fixed | RHSA-2026:65155, RHSA-2026:82151 |
| Red Hat Ansible Automation Platform 2.5 | Fixed | RHSA-2026:71210 |
| Red Hat Ansible Automation Platform 2.6 | Fixed | RHSA-2026:71179 |
| Red Hat Ansible Automation Platform 2.7 | Fixed | RHSA-2026:71177 |
| Red Hat Cost Management On-Premise 1 | Fixed | RHSA-2026:79357 |
| Red Hat Developer Hub 1.10 | Fixed | RHSA-2026:76788, RHSA-2026:79088 |
| Red Hat Developer Hub 1.9 | Fixed | RHSA-2026:69248 |
| Red Hat Discovery 2 | Fixed | RHSA-2026:69289 |
| Red Hat Edge Manager 1.1 | Fixed | RHSA-2026:68044, RHSA-2026:68253 |
| Red Hat Edge Manager 1.2 | Fixed | RHSA-2026:68006, RHSA-2026:68254 |
| Red Hat Edge Manager 1.3 | Fixed | RHSA-2026:73807, RHSA-2026:73809 |
| Red Hat Enterprise Linux AppStream (v. 10) | Fixed | RHSA-2026:71543 |
| Red Hat Hardened Images | Fixed | RHSA-2026:63782, RHSA-2026:65537, RHSA-2026:65617 |
| Red Hat Migration Toolkit 1.8 | Fixed | RHSA-2026:68681 |
| Red Hat OpenShift AI 2.25 | Fixed | RHSA-2026:87410 |
| Red Hat OpenShift AI 3.4 | Fixed | RHSA-2026:84734 |
| Red Hat OpenShift AI 3.5 | Fixed | RHSA-2026:86891 |
| Red Hat OpenShift Container Platform 4.16 | Fixed | RHSA-2026:89715 |
| Red Hat OpenShift Container Platform 4.18 | Fixed | RHSA-2026:79040 |
| Red Hat OpenShift Container Platform 4.19 | Fixed | RHSA-2026:74435, RHSA-2026:83480 |
| Red Hat OpenShift Container Platform 4.20 | Fixed | RHSA-2026:68543, RHSA-2026:83502 |
| Red Hat OpenShift Container Platform 4.21 | Fixed | RHSA-2026:68547, RHSA-2026:83702 |
| Red Hat OpenShift Container Platform 4.22 | Fixed | RHSA-2026:68553, RHSA-2026:83541 |
| Red Hat OpenShift Dev Spaces 3.30 | Fixed | RHSA-2026:68754 |
| Red Hat OpenShift Dev Spaces 3.31 | Fixed | RHSA-2026:90321 |
| Red Hat Openshift Data Foundation 4.19 | Fixed | RHSA-2026:92650 |
| Red Hat Quay 3.17 | Fixed | RHSA-2026:74511 |
| Red Hat Quay 3.9 | Fixed | RHSA-2026:77656 |
| Red Hat Satellite 6.18 | Fixed | RHSA-2026:68756, RHSA-2026:68762, RHSA-2026:74633, RHSA-2026:79377 |
| Red Hat Satellite 6.19 | Fixed | RHSA-2026:68747, RHSA-2026:68748, RHSA-2026:68750, RHSA-2026:74624 |
| Red Hat Satellite 6.19 for RHEL 9 | Fixed | RHSA-2026:74503 |
Not affected: 43 products
- Cluster Observability Operator 1.5
- Cryostat 4
- Migration Toolkit for Applications 8
- Network Observability (NETOBSERV) 1.12.3
- Red Hat AMQ Broker 7
- Red Hat Ansible Automation Platform 2
- Red Hat Ansible Automation Platform 2.5
- Red Hat Ansible Automation Platform 2.6
- Red Hat Ansible Automation Platform 2.7
- Red Hat Build of Podman Desktop
- Red Hat Data Grid 8
- Red Hat Developer Hub 1.10
- Red Hat Developer Hub 1.9
- Red Hat Directory Server 11
- Red Hat Directory Server 12
- Red Hat Discovery 2
- Red Hat Edge Manager 1.1
- Red Hat Edge Manager 1.2
- Red Hat Edge Manager 1.3
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
- Red Hat Hardened Images
- Red Hat Migration Toolkit 1.8
- Red Hat OpenShift AI (RHOAI)
- Red Hat OpenShift AI 2.25
- Red Hat OpenShift AI 3.4
- Red Hat OpenShift AI 3.5
- Red Hat OpenShift Container Platform 4
- Red Hat OpenShift Container Platform 4.16
- Red Hat OpenShift Container Platform 4.18
- Red Hat OpenShift Container Platform 4.19
- Red Hat OpenShift Container Platform 4.20
- Red Hat OpenShift Container Platform 4.21
- Red Hat OpenShift Container Platform 4.22
- Red Hat OpenShift Container Platform 5
- Red Hat OpenShift Dev Spaces
- Red Hat OpenShift Dev Spaces 3.30
- Red Hat OpenShift Dev Spaces 3.31
- Red Hat Openshift Data Foundation 4.19
- Red Hat Quay 3.17
- Red Hat Quay 3.9
- Red Hat Satellite 6.19 for RHEL 9
Timeline
- 2026-10-02 Threatist record created from CVE-2026-84292
- 2026-10-03 Alias added: GHSA-qw65-cvwx-89v3
- 2026-10-05 Affected versions changed · Red Hat
- 2026-10-07 Fix available: RHSA-2026:76788 · Red Hat
- 2026-10-07 Fix available: Red Hat Developer Hub 1.10 · Red Hat
- 2026-10-07 Fix available: RHSA-2026:74435 · Red Hat
- 2026-10-07 Fix available: Red Hat OpenShift Container Platform 4.19 · Red Hat
- 2026-10-07 Fix available: RHSA-2026:77656 · Red Hat
- 2026-10-08 Fix available: Red Hat Quay 3.9 · Red Hat
- 2026-10-09 Fix available: RHSA-2026:79088 · Red Hat
- 2026-10-09 Fix available: RHSA-2026:79377 · Red Hat
- 2026-10-09 Fix available: RHSA-2026:79357 · Red Hat
- 2026-10-09 Fix available: Red Hat Cost Management On-Premise 1 · Red Hat
- 2026-10-10 Affected versions changed · Red Hat
- 2026-10-13 Affected versions changed · Red Hat
- 2026-10-13 Fix available: RHSA-2026:82151 · Red Hat
- 2026-10-16 Fix available: RHSA-2026:79040 · Red Hat
- 2026-10-16 Fix available: Red Hat OpenShift Container Platform 4.18 · Red Hat
- 2026-10-20 Fix available: RHSA-2026:84734 · Red Hat
- 2026-10-20 Fix available: RHSA-2026:83502 · Red Hat
- 2026-10-20 Fix available: RHSA-2026:83541 · Red Hat
- 2026-10-20 Fix available: RHSA-2026:83702 · Red Hat
- 2026-10-20 Fix available: Red Hat OpenShift AI 3.4 · Red Hat
- 2026-10-22 Fix available: RHSA-2026:83480 · Red Hat
- 2026-10-22 Fix available: RHSA-2026:86891 · Red Hat
- 2026-10-22 Fix available: RHSA-2026:87410 · Red Hat
- 2026-10-23 Fix available: Red Hat OpenShift AI 2.25, Red Hat OpenShift AI 3.5 · Red Hat
- 2026-10-29 Fix available: Red Hat OpenShift Container Platform 4.16, Red Hat OpenShift Dev Spaces 3.31 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:90321 · Red Hat
- 2026-10-30 Fix available: RHSA-2026:89715 · Red Hat
- 2026-10-30 Affected versions changed · Red Hat
- 2026-10-30 Fix available: Red Hat Openshift Data Foundation 4.19 · Red Hat
- 2026-10-31 Fix available: RHSA-2026:92650 · Red Hat
- 2026-11-04 Fix available: RHSA-2026:95081 · Red Hat
- 2026-11-04 Fix available: Cluster Observability Operator 1.5 · Red Hat
- 2026-11-06 Affected versions changed · Red Hat
- 2026-11-06 Fix available: RHSA-2026:95591 · Red Hat
- 2026-11-06 Fix available: RHSA-2026:71177 · Red Hat
References
Advisory 3
More Fast-uri vulnerabilities
- TI-2026-11539 fast-uri vulnerable to host confusion via failed IDN canonicalization CVSS 3.1HIGH 7.5
- TI-2026-05545 fast-uri vulnerable to path traversal via percent-encoded dot segments CVSS 3.1HIGH 7.5
- TI-2026-58005 fast-uri vulnerable to host confusion via an unclosed bracket in the URI authority CVSS 3.1HIGH 7.5
- TI-2026-53157 fast-uri vulnerable to host confusion via skipped IDN canonicalization on scheme-relative references CVSS 3.1HIGH 7.5
- TI-2026-15158 fast-uri vulnerable to host confusion via backslash authority introducer CVSS 3.1HIGH 7.5
- TI-2026-13562 fast-uri vulnerable to host confusion via literal backslash authority delimiter CVSS 3.1HIGH 7.5
Sources
- CVE-2026-84292 · CVE Program
- CVE-2026-84292 · NVD
- FIRST EPSS
- GHSA-qw65-cvwx-89v3 · GitHub Advisory Database · CC BY 4.0
- CVE-2026-84292 · 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