FKIE_CVE-2026-4800
Vulnerability from fkie_nvd - Published: 2026-03-31 20:16 - Updated: 2026-07-01 13:17
Severity
8.1 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.1 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
8.1 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
Impact:
The fix for CVE-2021-23337 (https://github.com/advisories/GHSA-35jh-r3h4-6jhm) added validation for the variable option in _.template but did not apply the same validation to options.imports key names. Both paths flow into the same Function() constructor sink.
When an application passes untrusted input as options.imports key names, an attacker can inject default-parameter expressions that execute arbitrary code at template compilation time.
Additionally, _.template uses assignInWith to merge imports, which enumerates inherited properties via for..in. If Object.prototype has been polluted by any other vector, the polluted keys are copied into the imports object and passed to Function().
Patches:
Users should upgrade to version 4.18.0.
Workarounds:
Do not pass untrusted input as key names in options.imports. Only use developer-controlled, static key names.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| lodash | lodash | * | |
| lodash | lodash-amd | * | |
| lodash | lodash-es | * | |
| lodash | lodash.template | * |
{
"affected": [
{
"affectedData": [
{
"defaultStatus": "unaffected",
"packageURL": "pkg:npm/lodash",
"product": "lodash",
"vendor": "lodash",
"versions": [
{
"lessThan": "4.18.0",
"status": "affected",
"version": "4.0.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "4.18.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"packageURL": "pkg:npm/lodash-es",
"product": "lodash-es",
"vendor": "lodash",
"versions": [
{
"lessThan": "4.18.0",
"status": "affected",
"version": "4.0.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "4.18.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"packageURL": "pkg:npm/lodash-amd",
"product": "lodash-amd",
"vendor": "lodash",
"versions": [
{
"lessThan": "4.18.0",
"status": "affected",
"version": "4.0.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "4.18.0",
"versionType": "semver"
}
]
},
{
"defaultStatus": "unaffected",
"packageURL": "pkg:npm/lodash.template",
"product": "lodash.template",
"vendor": "lodash",
"versions": [
{
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"status": "affected",
"version": "4.0.0",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "4.18.0",
"versionType": "semver"
}
]
}
],
"source": "ce714d77-add3-4f53-aff5-83d477b104bb"
},
{
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{
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{
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{
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{
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{
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},
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],
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},
{
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],
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"vendor": "Red Hat"
},
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],
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},
{
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],
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},
{
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],
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"vendor": "Red Hat"
},
{
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],
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"vendor": "Red Hat"
},
{
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],
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"product": "Red Hat OpenShift Container Platform 4.22",
"vendor": "Red Hat"
},
{
"cpes": [
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],
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},
{
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],
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},
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},
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},
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},
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{
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],
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},
{
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"vendor": "Red Hat"
},
{
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"vendor": "Red Hat"
},
{
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],
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"vendor": "Red Hat"
},
{
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],
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"vendor": "Red Hat"
},
{
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"vendor": "Red Hat"
},
{
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},
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],
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"product": "Logging Subsystem for Red Hat OpenShift",
"vendor": "Red Hat"
},
{
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],
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"vendor": "Red Hat"
},
{
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],
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},
{
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],
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},
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],
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"vendor": "Red Hat"
},
{
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],
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"vendor": "Red Hat"
},
{
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],
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"product": "Red Hat 3scale API Management Platform 2",
"vendor": "Red Hat"
},
{
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],
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},
{
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],
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},
{
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],
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"vendor": "Red Hat"
},
{
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],
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},
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},
{
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],
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},
{
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],
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},
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},
{
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],
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"vendor": "Red Hat"
},
{
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],
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},
{
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],
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"vendor": "Red Hat"
},
{
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"cpe:/a:redhat:openshift_ai"
],
"defaultStatus": "affected",
"product": "Red Hat OpenShift AI (RHOAI)",
"vendor": "Red Hat"
},
{
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"cpe:/a:redhat:openshift:4"
],
"defaultStatus": "affected",
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"vendor": "Red Hat"
},
{
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"cpe:/a:redhat:openshift_gitops:1"
],
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"product": "Red Hat OpenShift GitOps",
"vendor": "Red Hat"
},
{
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"cpe:/a:redhat:container_native_virtualization:4"
],
"defaultStatus": "affected",
"product": "Red Hat OpenShift Virtualization 4",
"vendor": "Red Hat"
},
{
"cpes": [
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],
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"product": "Red Hat Process Automation 7",
"vendor": "Red Hat"
},
{
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],
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"product": "Red Hat Satellite 6",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:red_hat_single_sign_on:7"
],
"defaultStatus": "affected",
"product": "Red Hat Single Sign-On 7",
"vendor": "Red Hat"
},
{
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],
"defaultStatus": "affected",
"product": "Red Hat Trusted Profile Analyzer",
"vendor": "Red Hat"
},
{
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"cpe:/a:redhat:ansible_portal:2"
],
"defaultStatus": "affected",
"product": "Self-service automation portal 2",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:amq_streams:2"
],
"defaultStatus": "affected",
"product": "streams for Apache Kafka 2",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:ansible_automation_platform:2.6::el10",
"cpe:/a:redhat:ansible_automation_platform_developer:2.6::el10"
],
"defaultStatus": "unaffected",
"product": "Red Hat Ansible Automation Platform 2.6 for RHEL 10",
"vendor": "Red Hat"
},
{
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"cpe:/a:redhat:gatekeeper:3"
],
"defaultStatus": "unaffected",
"product": "Gatekeeper 3",
"vendor": "Red Hat"
},
{
"cpes": [
"cpe:/a:redhat:multicluster_engine"
],
"defaultStatus": "unaffected",
"product": "Multicluster Engine for Kubernetes",
"vendor": "Red Hat"
},
{
"cpes": [
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],
"defaultStatus": "unaffected",
"product": "OpenShift Service Mesh 3",
"vendor": "Red Hat"
},
{
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],
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},
{
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},
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
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.
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