CVE-2026-6322 (GCVE-0-2026-6322)

Vulnerability from cvelistv5 – Published: 2026-05-05 10:29 – Updated: 2026-07-08 12:06
VLAI
Title
fast-uri vulnerable to host confusion via percent-encoded authority delimiters
Summary
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.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-436 - Interpretation Conflict
  • CWE-140 - Improper Neutralization of Delimiters
Assigner
References
URL Tags
https://github.com/fastify/fast-uri/security/advi…
https://cna.openjsf.org/security-advisories.html
https://access.redhat.com/security/cve/CVE-2026-6322 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2466684 issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v… x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:34160 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:34342 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:25273 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:34374 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:26234 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:29197 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:29800 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:34770 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:29834 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:29796 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:29795 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:33683 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:30076 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:28571 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:26225 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:25271 vendor-advisoryx_refsource_REDHAT
Impacted products
Vendor Product Version
fast-uri fast-uri Affected: 0 , < 3.1.2 (semver)
Unaffected: 3.1.2 (semver)
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Red Hat Red Hat Ansible Automation Platform 2.6 for RHEL 9     cpe:/a:redhat:ansible_automation_platform:2.6::el9
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Red Hat Cluster Observability Operator 1.5.0     cpe:/a:redhat:cluster_observability_operator:1.5::el9
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Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.16     cpe:/a:redhat:acm:2.16::el9
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Red Hat Red Hat Developer Hub 1.9     cpe:/a:redhat:rhdh:1.9::el9
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Red Hat Red Hat Discovery 2     cpe:/a:redhat:discovery:2::el9
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Red Hat Red Hat OpenShift Container Platform 4.20     cpe:/a:redhat:openshift:4.20::el9
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Red Hat Red Hat Quay 3.10     cpe:/a:redhat:quay:3.10::el8
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Red Hat Red Hat Quay 3.12     cpe:/a:redhat:quay:3.12::el8
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Red Hat Red Hat Quay 3.9     cpe:/a:redhat:quay:3.9::el8
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Red Hat Red Hat Satellite 6.18     cpe:/a:redhat:satellite:6.18::el9
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Red Hat multicluster engine for Kubernetes 2.11     cpe:/a:redhat:multicluster_engine:2.11::el9
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Red Hat Confidential Compute Attestation     cpe:/a:redhat:confidential_compute_attestation:1
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Red Hat Migration Toolkit for Applications 8     cpe:/a:redhat:migration_toolkit_applications:8
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Red Hat OpenShift Serverless     cpe:/a:redhat:serverless:1
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Red Hat Red Hat Ansible Automation Platform 2     cpe:/a:redhat:ansible_automation_platform:2
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Red Hat Red Hat Build of Podman Desktop     cpe:/a:redhat:podman_desktop:1
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Credits
Jvr Matteo Collina Ulises Gascón KaKa
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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.