CVE-2026-6322: fast-uri vulnerable to host confusion via percent-encoded authority delimiters
Description
fast-uri normalize() decoded percent-encoded authority delimiters inside the host component and then re-emitted them as raw delimiters during serialization. A host that combined an allowed domain, an encoded at-sign, and a different domain was re-emitted with the at-sign as a raw userinfo separator, changing the URI's authority to the second domain. Applications that normalize untrusted URLs before host allowlist checks, redirect validation, or outbound request routing can be steered to a different authority than the input appeared to specify. Versions <= 3.1.1 are affected. Update to 3.1.2 or later.
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N · CWE-436
Tracked companies
Mapped from the CVE’s affected-product data, NVD CPE matches, vendor advisories or package feeds. A mapping means the vendor’s software is named, not that its hosted service was exposed.
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
fast-uri: fast-uriRed Hat: Cluster Observability Operator 1.5.0Red Hat: Confidential Compute AttestationRed Hat: Cryostat 4Red Hat: Network Observability OperatorRed Hat: OpenShift LightspeedRed Hat: OpenShift PipelinesRed Hat: OpenShift ServerlessRed Hat: Red Hat Advanced Cluster Management for Kubernetes 2.16Red Hat: Red Hat AMQ Broker 7Red Hat: Red Hat Ansible Automation Platform 2Red Hat: Red Hat Ansible Automation Platform 2.5 for RHEL 8Red Hat: Red Hat Ansible Automation Platform 2.5 for RHEL 9Red Hat: Red Hat Ansible Automation Platform 2.6Red Hat: Red Hat Ansible Automation Platform 2.6 for RHEL 9Red Hat: Red Hat Ansible Automation Platform 2.7Red Hat: Red Hat build of Apache Camel - HawtIO 4Red Hat: Red Hat Build of Podman DesktopRed Hat: Red Hat Build of Podman Desktop - Tech PreviewRed Hat: Red Hat Data Grid 8.6.2Red Hat: Red Hat Enterprise Linux 10Red Hat: Red Hat Enterprise Linux 9Red Hat: Red Hat Enterprise Linux AI (RHEL AI) 3Red Hat: Red Hat Hardened ImagesRed Hat: Red Hat OpenShift AI (RHOAI)Red Hat: Red Hat OpenShift Container Platform 4Red Hat: Red Hat Openshift Data Foundation 4Red Hat: Red Hat OpenShift Dev SpacesRed Hat: Red Hat OpenShift Virtualization 4Red Hat: Red Hat Satellite 6Red Hat: Self-service automation portal 2
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- cna.openjsf.org/security-advisories.html (opens in new tab)
- github.com/fastify/fast-uri/security/advisories/GHSA-v39h-62p7-jpjc (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)