fast-uri vulnerable to path traversal via percent-encoded dot segments
Summary
| CVE | CVE-2026-6321 |
|---|---|
| State | PUBLISHED |
| Assigner | openjs |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-05-04 20:16:20 UTC |
| Updated | 2026-07-21 12:19:01 UTC |
| Description | fast-uri decoded percent-encoded path separators and dot segments before applying dot-segment removal in its normalize() and equal() functions. Encoded path data was treated like real slashes and parent-directory references, so distinct URIs could collapse onto the same normalized path. Applications that normalize or compare attacker-controlled URLs to enforce path-based policy can be bypassed, with a path that appears confined under an allowed prefix normalizing to a different location. Versions <= 3.1.0 are affected. Update to 3.1.1 or later. |
Risk And Classification
Primary CVSS: v3.1 7.5 HIGH from ADP
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
EPSS: 0.005210000 probability, percentile 0.408430000 (date 2026-07-21)
Problem Types: CWE-22 | CWE-22 CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') | CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | ADP | CVSS | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| 3.1 | ce714d77-add3-4f53-aff5-83d477b104bb | Secondary | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| 3.1 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | Secondary | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
| 3.1 | CNA | CVSS | 7.5 | HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
LowPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
HighAvailability
NoneCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
NVD Known Affected Configurations (CPE 2.3)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Fast-uri | Fast-uri | affected 3.1.1 semver | Not specified |
| CNA | Fast-uri | Fast-uri | unaffected 3.1.1 semver | Not specified |
| ADP | Red Hat | HawtIO HawtIO 4.4.0 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Ansible Automation Platform 2.5 For RHEL 8 | unaffected 0:2.5.20260715-1.el8ap * rpm | Not specified |
| ADP | Red Hat | Red Hat Ansible Automation Platform 2.5 For RHEL 9 | unaffected 0:2.5.20260715-1.el9ap * rpm | Not specified |
| ADP | Red Hat | Red Hat Ansible Automation Platform 2.6 For RHEL 9 | unaffected 0:2.6.11-1.el9ap * rpm | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 10 | unaffected 0:1.1.1-1.el10_2 * rpm | Not specified |
| ADP | Red Hat | Cluster Observability Operator 1.5.0 | unaffected 1782840519 * rpm | Not specified |
| ADP | Red Hat | Cluster Observability Operator 1.5.0 | unaffected 1782839981 * rpm | Not specified |
| ADP | Red Hat | Cluster Observability Operator 1.5.0 | unaffected 1782839193 * rpm | Not specified |
| ADP | Red Hat | Cluster Observability Operator 1.5.0 | unaffected 1782838753 * rpm | Not specified |
| ADP | Red Hat | Cluster Observability Operator 1.5.0 | unaffected 1782839279 * rpm | Not specified |
| ADP | Red Hat | Cluster Observability Operator 1.5.0 | unaffected 1782840539 * rpm | Not specified |
| ADP | Red Hat | Cluster Observability Operator 1.5.0 | unaffected 1782841925 * rpm | Not specified |
| ADP | Red Hat | Cluster Observability Operator 1.5.0 | unaffected 1782838476 * rpm | Not specified |
| ADP | Red Hat | Cluster Observability Operator 1.5.0 | unaffected 1782839996 * rpm | Not specified |
| ADP | Red Hat | Cluster Observability Operator 1.5.0 | unaffected 1782839494 * rpm | Not specified |
| ADP | Red Hat | Network Observability NETOBSERV 1.12.0 | unaffected 1780556069 * rpm | Not specified |
| ADP | Red Hat | Red Hat Ansible Automation Platform 2.5 | unaffected 1780082949 * rpm | Not specified |
| ADP | Red Hat | Red Hat Ansible Automation Platform 2.6 | unaffected 1779784904 * rpm | Not specified |
| ADP | Red Hat | Red Hat Ansible Automation Platform 2.6 | unaffected 1779783248 * rpm | Not specified |
| ADP | Red Hat | Red Hat Developer Hub 1.8 | unaffected 1779841586 * rpm | Not specified |
| ADP | Red Hat | Red Hat Developer Hub 1.9 | unaffected 1781187342 * rpm | Not specified |
| ADP | Red Hat | Red Hat Discovery 2 | unaffected 1779395188 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI 2.25 | unaffected 1780467029 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI 2.25 | unaffected 1780467147 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.16 | unaffected 1781183284 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.16 | unaffected 1781183499 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.16 | unaffected 1780663368 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.16 | unaffected 1781184121 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.16 | unaffected 1780663596 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.16 | unaffected 1781183713 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.16 | unaffected 1780663548 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.16 | unaffected 1781183811 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.16 | unaffected 1781184611 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.16 | unaffected 1780663638 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.16 | unaffected 1780663861 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.16 | unaffected 1780663920 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.16 | unaffected 1781184484 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.16 | unaffected 1780663886 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.16 | unaffected 1781184239 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.16 | unaffected 1780664089 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.16 | unaffected 1780664140 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.16 | unaffected 1781184468 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.18 | unaffected 1781555717 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.18 | unaffected 1781554936 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.18 | unaffected 1781555645 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.18 | unaffected 1781556009 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.18 | unaffected 1781558423 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.18 | unaffected 1781555708 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.18 | unaffected 1781557202 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.18 | unaffected 1781555679 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.18 | unaffected 1781557189 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.18 | unaffected 1781556534 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.18 | unaffected 1781556085 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.18 | unaffected 1781555971 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.18 | unaffected 1781557158 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.18 | unaffected 1781556690 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.18 | unaffected 1781558326 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.18 | unaffected 1781556544 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.18 | unaffected 1781556958 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.18 | unaffected 1781556901 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.18 | unaffected 1781557496 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.19 | unaffected 1778576707 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.19 | unaffected 1778576350 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.19 | unaffected 1778769574 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.19 | unaffected 1778576929 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.19 | unaffected 1778770148 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.19 | unaffected 1778576957 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.19 | unaffected 1779093256 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.19 | unaffected 1778577150 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.19 | unaffected 1778577175 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.19 | unaffected 1778577083 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.19 | unaffected 1778770362 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.19 | unaffected 1778577169 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.19 | unaffected 1778577201 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.19 | unaffected 1778577489 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.19 | unaffected 1778770439 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.19 | unaffected 1778577548 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.19 | unaffected 1778770127 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.19 | unaffected 1778577523 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.19 | unaffected 1778577519 * rpm | Not specified |
| ADP | Red Hat | Red Hat Openshift Data Foundation 4.19 | unaffected 1778577696 * rpm | Not specified |
| ADP | Red Hat | Red Hat OpenShift Dev Spaces 3.28 | unaffected 1780685176 * rpm | Not specified |
| ADP | Red Hat | Red Hat Satellite 6.18 | unaffected 1781181673 * rpm | Not specified |
| ADP | Red Hat | Confidential Compute Attestation | Not specified | Not specified |
| ADP | Red Hat | Cryostat 4 | Not specified | Not specified |
| ADP | Red Hat | OpenShift Pipelines | Not specified | Not specified |
| ADP | Red Hat | OpenShift Pipelines | Not specified | Not specified |
| ADP | Red Hat | Red Hat Ansible Automation Platform 2 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Ansible Automation Platform 2 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Build Of Podman Desktop | Not specified | Not specified |
| ADP | Red Hat | Red Hat Build Of Podman Desktop | Not specified | Not specified |
| ADP | Red Hat | Red Hat Build Of Podman Desktop - Tech Preview | Not specified | Not specified |
| ADP | Red Hat | Red Hat Data Grid 8 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Developer Hub | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 10 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Enterprise Linux 9 | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift AI RHOAI | Not specified | Not specified |
| ADP | Red Hat | Red Hat OpenShift Container Platform 4 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Satellite 6 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Satellite 6 | Not specified | Not specified |
| ADP | Red Hat | Red Hat Satellite 6 | Not specified | Not specified |
| ADP | Red Hat | Streams For Apache Kafka 2 | Not specified | Not specified |
| ADP | Red Hat | Streams For Apache Kafka 3 | Not specified | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| access.redhat.com/security/cve/CVE-2026-6321 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| cna.openjsf.org/security-advisories.html | ce714d77-add3-4f53-aff5-83d477b104bb | cna.openjsf.org | Vendor Advisory |
| github.com/fastify/fast-uri/security/advisories/GHSA-q3j6-qgpj-74h6 | ce714d77-add3-4f53-aff5-83d477b104bb | github.com | Vendor Advisory |
| access.redhat.com/errata/RHSA-2026:20338 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:24977 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:37385 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:34342 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:24473 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:19238 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:25089 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:21338 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:26214 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:42079 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:25123 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:26416 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-6321.json | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | security.access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:42078 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:24766 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| bugzilla.redhat.com/show_bug.cgi | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | bugzilla.redhat.com | |
| access.redhat.com/errata/RHSA-2026:24866 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:26234 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| access.redhat.com/errata/RHSA-2026:26420 | 0b0ca135-0b70-47e7-9f44-1890c2a1c46c | access.redhat.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Jvr (en)
CNA: Matteo Collina (en)
CNA: Ulises Gascón (en)
CNA: KaKa (en)
Additional Advisory Data
| Source | Time | Event |
|---|---|---|
| ADP | 2026-05-04T20:01:14.938Z | Reported to Red Hat. |
| ADP | 2026-05-04T19:31:57.253Z | Made public. |
Solutions
ADP: RHSA-2026:42078: Red Hat Ansible Automation Platform 2.5 for RHEL 8, Red Hat Ansible Automation Platform 2.5 for RHEL 9
ADP: RHSA-2026:42079: Red Hat Ansible Automation Platform 2.6 for RHEL 9
ADP: RHSA-2026:34342: Cluster Observability Operator 1.5.0
ADP: RHSA-2026:37385: Red Hat Enterprise Linux Extensions Channel (v. 10)
ADP: RHSA-2026:25089: HawtIO HawtIO 4.4.0
ADP: RHSA-2026:24473: Network Observability (NETOBSERV) 1.12.0
ADP: RHSA-2026:24766: Red Hat Ansible Automation Platform 2.5
ADP: RHSA-2026:24866: Red Hat Ansible Automation Platform 2.6
ADP: RHSA-2026:21338: Red Hat Developer Hub 1.8
ADP: RHSA-2026:26234: Red Hat Developer Hub 1.9
ADP: RHSA-2026:20338: Red Hat Discovery 2
ADP: RHSA-2026:24977: Red Hat OpenShift AI 2.25
ADP: RHSA-2026:25123: Red Hat OpenShift Dev Spaces 3.28
ADP: RHSA-2026:26416: Red Hat Openshift Data Foundation 4.16
ADP: RHSA-2026:26420: Red Hat Openshift Data Foundation 4.18
ADP: RHSA-2026:19238: Red Hat Openshift Data Foundation 4.19
ADP: RHSA-2026:26214: Red Hat Satellite 6.18
There are currently no legacy QID mappings associated with this CVE.