CVE-2026-4800 — Code Injection in Lodash.template

CWE-94 — Code Injection24 documents8 sources
Severity
9.8CRITICALNVD
CNA7.2GHSA7.2OSV7.2
EPSS
0.1%
top 74.62%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
5
LodashLodash Lodash-amdLodash Lodash-es+2 more
Timeline
PublishedMar 31
Latest updateApr 1

Description

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 t…

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages10 packages

▶CVEListV5lodash/lodash.template4.0.0 — 4.18.0
▶npmlodash/lodash.template4.0.0 — 4.18.0
▶CVEListV5lodash/lodash4.0.0 — 4.18.0
▶NVDlodash/lodash< 4.17.21

Patches

Patch: github.com ↗

🔴Vulnerability Details

4
GHSA
lodash vulnerable to Code Injection via `_.template` imports key names↗2026-04-01
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OSV
lodash vulnerable to Code Injection via `_.template` imports key names↗2026-04-01
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CVEList
lodash vulnerable to Code Injection via `_.template` imports key names↗2026-03-31
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OSV
CVE-2026-4800: Impact: The fix for CVE-2021-23337 (https://github↗2026-03-31
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📋Vendor Advisories

2
Red Hat
lodash: lodash: Arbitrary code execution via untrusted input in template imports↗2026-03-31
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Debian
CVE-2026-4800: node-lodash - Impact: The fix for CVE-2021-23337 (https://github.com/advisories/GHSA-35jh-r3h...↗2026
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🕵️Threat Intelligence

1
Wiz
CVE-2026-4800 Impact, Exploitability, and Mitigation Steps | Wiz↗
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💬Community

16
Bugzilla
CVE-2026-4800 prometheus: lodash: Arbitrary code execution via untrusted input in template imports [fedora-all]↗2026-04-01
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Bugzilla
CVE-2026-4800 cachelib: lodash: Arbitrary code execution via untrusted input in template imports [fedora-all]↗2026-04-01
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Bugzilla
CVE-2026-4800 cachelib: lodash: Arbitrary code execution via untrusted input in template imports [epel-all]↗2026-04-01
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Bugzilla
CVE-2026-4800 pgadmin4: lodash: Arbitrary code execution via untrusted input in template imports [fedora-all]↗2026-04-01
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Bugzilla
CVE-2026-4800 pcs: lodash: Arbitrary code execution via untrusted input in template imports [fedora-all]↗2026-04-01
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CVE-2026-4800 — Code Injection in Lodash.template | cvebase