by Kastro CVE-2026-4800
lodash lodash — lodash vulnerable to Code Injection via `_.template` imports key names
Description · from the CVE record
The fix for CVE-2021-23337 added validation for the variable option in _.template but did not apply the same validation to options.imports key names, and 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, so if Object.prototype has been polluted by another vector the polluted keys are copied into the imports object and passed to Function(). The issue is fixed in 4.18.1 for lodash, lodash-es, lodash-amd, and lodash.template. As a workaround, do not pass untrusted input as key names in options.imports; use only developer-controlled, static key names.
Affected
ProductAffectedFixed inSource
lodash4.0.0 – < 4.18.14.18.1CNA
lodash-es4.0.0 – < 4.18.14.18.1CNA
lodash-amd4.0.0 – < 4.18.14.18.1CNA
lodash.template4.0.0 – < 4.18.14.18.1CNA
Cryostat 4 on RHEL 9see advisory4.2.0-9redhat-SADP
Cryostat 4 on RHEL 9see advisory4.2.0-9redhat-SADP
Red Hat Ansible Automation Platform 2.5 for RHEL 8see advisory0:2.5.20260715-1.el8apredhat-SADP
Red Hat Ansible Automation Platform 2.5 for RHEL 9see advisory0:2.5.20260715-1.el9apredhat-SADP
Red Hat Ansible Automation Platform 2.6 for RHEL 9see advisory0:2.6.9-1.el9apredhat-SADP
Red Hat Data Grid 8.6.1see advisory–redhat-SADP
Red Hat Enterprise Linux 10see advisory0:0.12.1-1.el10_1.3redhat-SADP
Red Hat Enterprise Linux 10see advisory0:94.3-1.el10_2redhat-SADP
Scores by source
NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
openjs (CNA)8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
redhat-SADP (CNA)8.1CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total