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6 vulnerabilities found for path-to-regexp by path-to-regexp
CVE-2026-4926 (GCVE-0-2026-4926)
Vulnerability from nvd – Published: 2026-03-26 18:59 – Updated: 2026-06-30 12:10
VLAI
Title
path-to-regexp vulnerable to Denial of Service via sequential optional groups
Summary
Impact:
A bad regular expression is generated any time you have multiple sequential optional groups (curly brace syntax), such as `{a}{b}{c}:z`. The generated regex grows exponentially with the number of groups, causing denial of service.
Patches:
Fixed in version 8.4.0.
Workarounds:
Limit the number of sequential optional groups in route patterns. Avoid passing user-controlled input as route patterns.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
17 references
Impacted products
51 products
| Vendor | Product | Version | |
|---|---|---|---|
| path-to-regexp | path-to-regexp |
Affected:
8.0.0 , < 8.4.0
(semver)
Unaffected: 8.4.0 (semver) |
|
| Red Hat | Red Hat Ansible Automation Platform 2.5 for RHEL 8 |
cpe:/a:redhat:ansible_automation_platform:2.5::el8 cpe:/a:redhat:ansible_automation_platform_developer:2.5::el8 cpe:/a:redhat:ansible_automation_platform_inside:2.5::el8 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.5 for RHEL 9 |
cpe:/a:redhat:ansible_automation_platform:2.5::el9 cpe:/a:redhat:ansible_automation_platform_developer:2.5::el9 cpe:/a:redhat:ansible_automation_platform_inside:2.5::el9 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.6 for RHEL 9 |
cpe:/a:redhat:ansible_automation_platform:2.6::el9 cpe:/a:redhat:ansible_automation_platform_developer:2.6::el9 cpe:/a:redhat:ansible_automation_platform_inside:2.6::el9 |
|
| Red Hat | Cryostat 4 on RHEL 9 |
cpe:/a:redhat:cryostat:4::el9 |
|
| Red Hat | Migration Toolkit for Virtualization 2.1 |
cpe:/a:redhat:migration_toolkit_virtualization:2.10::el9 |
|
| Red Hat | Migration Toolkit for Virtualization 2.9 |
cpe:/a:redhat:migration_toolkit_virtualization:2.9::el9 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.6 |
cpe:/a:redhat:ansible_automation_platform:2.6::el9 |
|
| Red Hat | Red Hat Developer Hub 1.8 |
cpe:/a:redhat:rhdh:1.8::el9 |
|
| Red Hat | Red Hat Developer Hub 1.9 |
cpe:/a:redhat:rhdh:1.9::el9 |
|
| Red Hat | Red Hat OpenShift Dev Spaces 3.27 |
cpe:/a:redhat:openshift_devspaces:3.27::el9 |
|
| Red Hat | Red Hat OpenShift distributed tracing 3.9.3 |
cpe:/a:redhat:openshift_distributed_tracing:3.9::el9 |
|
| Red Hat | Red Hat Trusted Artifact Signer 1.3 |
cpe:/a:redhat:trusted_artifact_signer:1.3::el9 |
|
| Red Hat | Logging Subsystem for Red Hat OpenShift |
cpe:/a:redhat:logging:5 |
|
| Red Hat | Migration Toolkit for Applications 8 |
cpe:/a:redhat:migration_toolkit_applications:8 |
|
| Red Hat | Multicluster Engine for Kubernetes |
cpe:/a:redhat:multicluster_engine |
|
| Red Hat | OpenShift Pipelines |
cpe:/a:redhat:openshift_pipelines:1 |
|
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2 |
cpe:/a:redhat:acm:2 |
|
| Red Hat | Red Hat AMQ Broker 7 |
cpe:/a:redhat:amq_broker:7 |
|
| Red Hat | Red Hat Ansible Automation Platform 2 |
cpe:/a:redhat:ansible_automation_platform:2 |
|
| Red Hat | Red Hat Build of Podman Desktop |
cpe:/a:redhat:podman_desktop:1 |
|
| Red Hat | Red Hat Data Grid 8 |
cpe:/a:redhat:jboss_data_grid:8 |
|
| Red Hat | Red Hat Developer Hub |
cpe:/a:redhat:rhdh:1 |
|
| Red Hat | Red Hat Edge Manager 1 |
cpe:/a:redhat:edge_manager:1 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Fuse 7 |
cpe:/a:redhat:jboss_fuse:7 |
|
| Red Hat | Red Hat OpenShift AI (RHOAI) |
cpe:/a:redhat:openshift_ai |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
|
| Red Hat | Red Hat Openshift Data Foundation 4 |
cpe:/a:redhat:openshift_data_foundation:4 |
|
| Red Hat | Red Hat OpenShift GitOps |
cpe:/a:redhat:openshift_gitops:1 |
|
| Red Hat | Red Hat Single Sign-On 7 |
cpe:/a:redhat:red_hat_single_sign_on:7 |
|
| Red Hat | Self-service automation portal 2 |
cpe:/a:redhat:ansible_portal:2 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.6 for RHEL 10 |
cpe:/a:redhat:ansible_automation_platform:2.6::el10 cpe:/a:redhat:ansible_automation_platform_developer:2.6::el10 |
|
| Red Hat | Cryostat 4 |
cpe:/a:redhat:cryostat:4 |
|
| Red Hat | Network Observability Operator |
cpe:/a:redhat:network_observ_optr:1 |
|
| Red Hat | OpenShift Lightspeed |
cpe:/a:redhat:openshift_lightspeed |
|
| Red Hat | OpenShift Service Mesh 2 |
cpe:/a:redhat:service_mesh:2 |
|
| Red Hat | OpenShift Service Mesh 3 |
cpe:/a:redhat:service_mesh:3 |
|
| Red Hat | Red Hat Advanced Cluster Security 4 |
cpe:/a:redhat:advanced_cluster_security:4 |
|
| Red Hat | Red Hat build of Apache Camel - HawtIO 4 |
cpe:/a:redhat:apache_camel_hawtio:4 |
|
| Red Hat | Red Hat build of Apicurio Registry 2 |
cpe:/a:redhat:service_registry:2 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 7 |
cpe:/a:redhat:jboss_enterprise_application_platform:7 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8 |
cpe:/a:redhat:jboss_enterprise_application_platform:8 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform Expansion Pack |
cpe:/a:redhat:jbosseapxp |
|
| Red Hat | Red Hat OpenShift Virtualization 4 |
cpe:/a:redhat:container_native_virtualization:4 |
|
| Red Hat | Red Hat Process Automation 7 |
cpe:/a:redhat:jboss_enterprise_bpms_platform:7 |
|
| Red Hat | Red Hat Quay 3 |
cpe:/a:redhat:quay:3 |
|
| Red Hat | Red Hat Satellite 6 |
cpe:/a:redhat:satellite:6 |
|
| Red Hat | Red Hat Trusted Profile Analyzer |
cpe:/a:redhat:trusted_profile_analyzer:2 |
Credits
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"timestamp": "2026-03-27T19:44:44.790485Z",
"version": "2.0.3"
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"cpes": [
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],
"defaultStatus": "affected",
"product": "Logging Subsystem for Red Hat OpenShift",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:migration_toolkit_applications:8"
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"defaultStatus": "affected",
"product": "Migration Toolkit for Applications 8",
"vendor": "Red Hat"
},
{
"cpes": [
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"product": "Multicluster Engine for Kubernetes",
"vendor": "Red Hat"
},
{
"cpes": [
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"cpes": [
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{
"cpes": [
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{
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"product": "Red Hat OpenShift AI (RHOAI)",
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},
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},
{
"cpes": [
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},
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},
{
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"vendor": "Red Hat"
},
{
"cpes": [
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],
"defaultStatus": "affected",
"product": "Self-service automation portal 2",
"vendor": "Red Hat"
},
{
"cpes": [
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],
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"product": "Red Hat Ansible Automation Platform 2.6 for RHEL 10",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:cryostat:4"
],
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"product": "Cryostat 4",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:network_observ_optr:1"
],
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"product": "Network Observability Operator",
"vendor": "Red Hat"
},
{
"cpes": [
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],
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"product": "OpenShift Lightspeed",
"vendor": "Red Hat"
},
{
"cpes": [
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"product": "OpenShift Service Mesh 2",
"vendor": "Red Hat"
},
{
"cpes": [
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"vendor": "Red Hat"
},
{
"cpes": [
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},
{
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},
{
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"baseScore": 7.5,
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"providerMetadata": {
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CVE-2026-4923 (GCVE-0-2026-4923)
Vulnerability from nvd – Published: 2026-03-26 19:02 – Updated: 2026-03-27 13:58
VLAI
Title
path-to-regexp vulnerable to Regular Expression Denial of Service via multiple wildcards
Summary
Impact:
When using multiple wildcards, combined with at least one parameter, a regular expression can be generated that is vulnerable to ReDoS. This backtracking vulnerability requires the second wildcard to be somewhere other than the end of the path.
Unsafe examples:
/*foo-*bar-:baz
/*a-:b-*c-:d
/x/*a-:b/*c/y
Safe examples:
/*foo-:bar
/*foo-:bar-*baz
Patches:
Upgrade to version 8.4.0.
Workarounds:
If you are using multiple wildcard parameters, you can check the regex output with a tool such as https://makenowjust-labs.github.io/recheck/playground/ to confirm whether a path is vulnerable.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
1 reference
Impacted products
1 product
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Affected:
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CVE-2026-4867 (GCVE-0-2026-4867)
Vulnerability from nvd – Published: 2026-03-26 16:16 – Updated: 2026-03-26 16:52
VLAI
Title
path-to-regexp vulnerable to Regular Expression Denial of Service via multiple route parameters
Summary
Impact:
A bad regular expression is generated any time you have three or more parameters within a single segment, separated by something that is not a period (.). For example, /:a-:b-:c or /:a-:b-:c-:d. The backtrack protection added in path-to-regexp@0.1.12 only prevents ambiguity for two parameters. With three or more, the generated lookahead does not block single separator characters, so capture groups overlap and cause catastrophic backtracking.
Patches:
Upgrade to path-to-regexp@0.1.13
Custom regex patterns in route definitions (e.g., /:a-:b([^-/]+)-:c([^-/]+)) are not affected because they override the default capture group.
Workarounds:
All versions can be patched by providing a custom regular expression for parameters after the first in a single segment. As long as the custom regular expression does not match the text before the parameter, you will be safe. For example, change /:a-:b-:c to /:a-:b([^-/]+)-:c([^-/]+).
If paths cannot be rewritten and versions cannot be upgraded, another alternative is to limit the URL length.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
Impacted products
1 product
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CVE-2026-4923 (GCVE-0-2026-4923)
Vulnerability from cvelistv5 – Published: 2026-03-26 19:02 – Updated: 2026-03-27 13:58
VLAI
Title
path-to-regexp vulnerable to Regular Expression Denial of Service via multiple wildcards
Summary
Impact:
When using multiple wildcards, combined with at least one parameter, a regular expression can be generated that is vulnerable to ReDoS. This backtracking vulnerability requires the second wildcard to be somewhere other than the end of the path.
Unsafe examples:
/*foo-*bar-:baz
/*a-:b-*c-:d
/x/*a-:b/*c/y
Safe examples:
/*foo-:bar
/*foo-:bar-*baz
Patches:
Upgrade to version 8.4.0.
Workarounds:
If you are using multiple wildcard parameters, you can check the regex output with a tool such as https://makenowjust-labs.github.io/recheck/playground/ to confirm whether a path is vulnerable.
Severity
5.9 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
1 reference
Impacted products
1 product
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Affected:
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CVE-2026-4926 (GCVE-0-2026-4926)
Vulnerability from cvelistv5 – Published: 2026-03-26 18:59 – Updated: 2026-06-30 12:10
VLAI
Title
path-to-regexp vulnerable to Denial of Service via sequential optional groups
Summary
Impact:
A bad regular expression is generated any time you have multiple sequential optional groups (curly brace syntax), such as `{a}{b}{c}:z`. The generated regex grows exponentially with the number of groups, causing denial of service.
Patches:
Fixed in version 8.4.0.
Workarounds:
Limit the number of sequential optional groups in route patterns. Avoid passing user-controlled input as route patterns.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
17 references
Impacted products
51 products
| Vendor | Product | Version | |
|---|---|---|---|
| path-to-regexp | path-to-regexp |
Affected:
8.0.0 , < 8.4.0
(semver)
Unaffected: 8.4.0 (semver) |
|
| Red Hat | Red Hat Ansible Automation Platform 2.5 for RHEL 8 |
cpe:/a:redhat:ansible_automation_platform:2.5::el8 cpe:/a:redhat:ansible_automation_platform_developer:2.5::el8 cpe:/a:redhat:ansible_automation_platform_inside:2.5::el8 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.5 for RHEL 9 |
cpe:/a:redhat:ansible_automation_platform:2.5::el9 cpe:/a:redhat:ansible_automation_platform_developer:2.5::el9 cpe:/a:redhat:ansible_automation_platform_inside:2.5::el9 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.6 for RHEL 9 |
cpe:/a:redhat:ansible_automation_platform:2.6::el9 cpe:/a:redhat:ansible_automation_platform_developer:2.6::el9 cpe:/a:redhat:ansible_automation_platform_inside:2.6::el9 |
|
| Red Hat | Cryostat 4 on RHEL 9 |
cpe:/a:redhat:cryostat:4::el9 |
|
| Red Hat | Migration Toolkit for Virtualization 2.1 |
cpe:/a:redhat:migration_toolkit_virtualization:2.10::el9 |
|
| Red Hat | Migration Toolkit for Virtualization 2.9 |
cpe:/a:redhat:migration_toolkit_virtualization:2.9::el9 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.6 |
cpe:/a:redhat:ansible_automation_platform:2.6::el9 |
|
| Red Hat | Red Hat Developer Hub 1.8 |
cpe:/a:redhat:rhdh:1.8::el9 |
|
| Red Hat | Red Hat Developer Hub 1.9 |
cpe:/a:redhat:rhdh:1.9::el9 |
|
| Red Hat | Red Hat OpenShift Dev Spaces 3.27 |
cpe:/a:redhat:openshift_devspaces:3.27::el9 |
|
| Red Hat | Red Hat OpenShift distributed tracing 3.9.3 |
cpe:/a:redhat:openshift_distributed_tracing:3.9::el9 |
|
| Red Hat | Red Hat Trusted Artifact Signer 1.3 |
cpe:/a:redhat:trusted_artifact_signer:1.3::el9 |
|
| Red Hat | Logging Subsystem for Red Hat OpenShift |
cpe:/a:redhat:logging:5 |
|
| Red Hat | Migration Toolkit for Applications 8 |
cpe:/a:redhat:migration_toolkit_applications:8 |
|
| Red Hat | Multicluster Engine for Kubernetes |
cpe:/a:redhat:multicluster_engine |
|
| Red Hat | OpenShift Pipelines |
cpe:/a:redhat:openshift_pipelines:1 |
|
| Red Hat | Red Hat Advanced Cluster Management for Kubernetes 2 |
cpe:/a:redhat:acm:2 |
|
| Red Hat | Red Hat AMQ Broker 7 |
cpe:/a:redhat:amq_broker:7 |
|
| Red Hat | Red Hat Ansible Automation Platform 2 |
cpe:/a:redhat:ansible_automation_platform:2 |
|
| Red Hat | Red Hat Build of Podman Desktop |
cpe:/a:redhat:podman_desktop:1 |
|
| Red Hat | Red Hat Data Grid 8 |
cpe:/a:redhat:jboss_data_grid:8 |
|
| Red Hat | Red Hat Developer Hub |
cpe:/a:redhat:rhdh:1 |
|
| Red Hat | Red Hat Edge Manager 1 |
cpe:/a:redhat:edge_manager:1 |
|
| Red Hat | Red Hat Enterprise Linux 9 |
cpe:/o:redhat:enterprise_linux:9 |
|
| Red Hat | Red Hat Fuse 7 |
cpe:/a:redhat:jboss_fuse:7 |
|
| Red Hat | Red Hat OpenShift AI (RHOAI) |
cpe:/a:redhat:openshift_ai |
|
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4 |
|
| Red Hat | Red Hat Openshift Data Foundation 4 |
cpe:/a:redhat:openshift_data_foundation:4 |
|
| Red Hat | Red Hat OpenShift GitOps |
cpe:/a:redhat:openshift_gitops:1 |
|
| Red Hat | Red Hat Single Sign-On 7 |
cpe:/a:redhat:red_hat_single_sign_on:7 |
|
| Red Hat | Self-service automation portal 2 |
cpe:/a:redhat:ansible_portal:2 |
|
| Red Hat | Red Hat Ansible Automation Platform 2.6 for RHEL 10 |
cpe:/a:redhat:ansible_automation_platform:2.6::el10 cpe:/a:redhat:ansible_automation_platform_developer:2.6::el10 |
|
| Red Hat | Cryostat 4 |
cpe:/a:redhat:cryostat:4 |
|
| Red Hat | Network Observability Operator |
cpe:/a:redhat:network_observ_optr:1 |
|
| Red Hat | OpenShift Lightspeed |
cpe:/a:redhat:openshift_lightspeed |
|
| Red Hat | OpenShift Service Mesh 2 |
cpe:/a:redhat:service_mesh:2 |
|
| Red Hat | OpenShift Service Mesh 3 |
cpe:/a:redhat:service_mesh:3 |
|
| Red Hat | Red Hat Advanced Cluster Security 4 |
cpe:/a:redhat:advanced_cluster_security:4 |
|
| Red Hat | Red Hat build of Apache Camel - HawtIO 4 |
cpe:/a:redhat:apache_camel_hawtio:4 |
|
| Red Hat | Red Hat build of Apicurio Registry 2 |
cpe:/a:redhat:service_registry:2 |
|
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10 |
|
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 7 |
cpe:/a:redhat:jboss_enterprise_application_platform:7 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform 8 |
cpe:/a:redhat:jboss_enterprise_application_platform:8 |
|
| Red Hat | Red Hat JBoss Enterprise Application Platform Expansion Pack |
cpe:/a:redhat:jbosseapxp |
|
| Red Hat | Red Hat OpenShift Virtualization 4 |
cpe:/a:redhat:container_native_virtualization:4 |
|
| Red Hat | Red Hat Process Automation 7 |
cpe:/a:redhat:jboss_enterprise_bpms_platform:7 |
|
| Red Hat | Red Hat Quay 3 |
cpe:/a:redhat:quay:3 |
|
| Red Hat | Red Hat Satellite 6 |
cpe:/a:redhat:satellite:6 |
|
| Red Hat | Red Hat Trusted Profile Analyzer |
cpe:/a:redhat:trusted_profile_analyzer:2 |
Credits
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-4926",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "yes"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-03-27T19:44:44.790485Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-03-27T19:44:53.294Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
},
{
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],
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"product": "Red Hat Ansible Automation Platform 2.5 for RHEL 8",
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},
{
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{
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"defaultStatus": "affected",
"product": "Red Hat Ansible Automation Platform 2.6 for RHEL 9",
"vendor": "Red Hat"
},
{
"cpes": [
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],
"defaultStatus": "affected",
"product": "Cryostat 4 on RHEL 9",
"vendor": "Red Hat"
},
{
"cpes": [
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],
"defaultStatus": "affected",
"product": "Migration Toolkit for Virtualization 2.1",
"vendor": "Red Hat"
},
{
"cpes": [
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],
"defaultStatus": "affected",
"product": "Migration Toolkit for Virtualization 2.9",
"vendor": "Red Hat"
},
{
"cpes": [
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"defaultStatus": "affected",
"product": "Red Hat Ansible Automation Platform 2.6",
"vendor": "Red Hat"
},
{
"cpes": [
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],
"defaultStatus": "affected",
"product": "Red Hat Developer Hub 1.8",
"vendor": "Red Hat"
},
{
"cpes": [
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],
"defaultStatus": "affected",
"product": "Red Hat Developer Hub 1.9",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:openshift_devspaces:3.27::el9"
],
"defaultStatus": "affected",
"product": "Red Hat OpenShift Dev Spaces 3.27",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:openshift_distributed_tracing:3.9::el9"
],
"defaultStatus": "affected",
"product": "Red Hat OpenShift distributed tracing 3.9.3",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:trusted_artifact_signer:1.3::el9"
],
"defaultStatus": "affected",
"product": "Red Hat Trusted Artifact Signer 1.3",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:logging:5"
],
"defaultStatus": "affected",
"product": "Logging Subsystem for Red Hat OpenShift",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:migration_toolkit_applications:8"
],
"defaultStatus": "affected",
"product": "Migration Toolkit for Applications 8",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:multicluster_engine"
],
"defaultStatus": "affected",
"product": "Multicluster Engine for Kubernetes",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:openshift_pipelines:1"
],
"defaultStatus": "affected",
"product": "OpenShift Pipelines",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:acm:2"
],
"defaultStatus": "affected",
"product": "Red Hat Advanced Cluster Management for Kubernetes 2",
"vendor": "Red Hat"
},
{
"cpes": [
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"defaultStatus": "affected",
"product": "Red Hat AMQ Broker 7",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:ansible_automation_platform:2"
],
"defaultStatus": "affected",
"product": "Red Hat Ansible Automation Platform 2",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:podman_desktop:1"
],
"defaultStatus": "affected",
"product": "Red Hat Build of Podman Desktop",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:jboss_data_grid:8"
],
"defaultStatus": "affected",
"product": "Red Hat Data Grid 8",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:rhdh:1"
],
"defaultStatus": "affected",
"product": "Red Hat Developer Hub",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:edge_manager:1"
],
"defaultStatus": "affected",
"product": "Red Hat Edge Manager 1",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/o:redhat:enterprise_linux:9"
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"defaultStatus": "affected",
"product": "Red Hat Enterprise Linux 9",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:jboss_fuse:7"
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"defaultStatus": "affected",
"product": "Red Hat Fuse 7",
"vendor": "Red Hat"
},
{
"cpes": [
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],
"defaultStatus": "affected",
"product": "Red Hat OpenShift AI (RHOAI)",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:openshift:4"
],
"defaultStatus": "affected",
"product": "Red Hat OpenShift Container Platform 4",
"vendor": "Red Hat"
},
{
"cpes": [
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"defaultStatus": "affected",
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"vendor": "Red Hat"
},
{
"cpes": [
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"vendor": "Red Hat"
},
{
"cpes": [
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"product": "Red Hat Single Sign-On 7",
"vendor": "Red Hat"
},
{
"cpes": [
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],
"defaultStatus": "affected",
"product": "Self-service automation portal 2",
"vendor": "Red Hat"
},
{
"cpes": [
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],
"defaultStatus": "unaffected",
"product": "Red Hat Ansible Automation Platform 2.6 for RHEL 10",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:cryostat:4"
],
"defaultStatus": "unaffected",
"product": "Cryostat 4",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:network_observ_optr:1"
],
"defaultStatus": "unaffected",
"product": "Network Observability Operator",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:openshift_lightspeed"
],
"defaultStatus": "unaffected",
"product": "OpenShift Lightspeed",
"vendor": "Red Hat"
},
{
"cpes": [
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],
"defaultStatus": "unaffected",
"product": "OpenShift Service Mesh 2",
"vendor": "Red Hat"
},
{
"cpes": [
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"product": "OpenShift Service Mesh 3",
"vendor": "Red Hat"
},
{
"cpes": [
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"vendor": "Red Hat"
},
{
"cpes": [
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"vendor": "Red Hat"
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{
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{
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{
"cpes": [
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{
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"vendor": "Red Hat"
},
{
"cpes": [
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],
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"product": "Red Hat OpenShift Virtualization 4",
"vendor": "Red Hat"
},
{
"cpes": [
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"vendor": "Red Hat"
},
{
"cpes": [
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},
{
"cpes": [
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{
"cpes": [
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"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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},
"format": "CVSS"
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"problemTypes": [
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"description": "Inefficient Regular Expression Complexity",
"lang": "en",
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],
"providerMetadata": {
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CVE-2026-4867 (GCVE-0-2026-4867)
Vulnerability from cvelistv5 – Published: 2026-03-26 16:16 – Updated: 2026-03-26 16:52
VLAI
Title
path-to-regexp vulnerable to Regular Expression Denial of Service via multiple route parameters
Summary
Impact:
A bad regular expression is generated any time you have three or more parameters within a single segment, separated by something that is not a period (.). For example, /:a-:b-:c or /:a-:b-:c-:d. The backtrack protection added in path-to-regexp@0.1.12 only prevents ambiguity for two parameters. With three or more, the generated lookahead does not block single separator characters, so capture groups overlap and cause catastrophic backtracking.
Patches:
Upgrade to path-to-regexp@0.1.13
Custom regex patterns in route definitions (e.g., /:a-:b([^-/]+)-:c([^-/]+)) are not affected because they override the default capture group.
Workarounds:
All versions can be patched by providing a custom regular expression for parameters after the first in a single segment. As long as the custom regular expression does not match the text before the parameter, you will be safe. For example, change /:a-:b-:c to /:a-:b([^-/]+)-:c([^-/]+).
If paths cannot be rewritten and versions cannot be upgraded, another alternative is to limit the URL length.
Severity
7.5 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-1333 - Inefficient Regular Expression Complexity
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| path-to-regexp | path-to-regexp |
Affected:
0 , < 0.1.13
(semver)
|
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