Description
Lodash versions prior to 4.17.21 are vulnerable to Command Injection via the template function.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | Lodash | prior to 4.17.21 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | node-lodash | 4.17.21+dfsg+~cs8.31.173-1 | — |
| Debian 13 | node-lodash | 4.17.21+dfsg+~cs8.31.173-1 | — |
| Debian 12 | node-lodash | 4.17.21+dfsg+~cs8.31.173-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 25.10 | node-lodash | 4.17.21+dfsg+~cs8.31.198.20210220-9ubuntu0.25.10.1 | USN-8411-1 |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 26.04 LTS | node-lodash | 4.17.23+dfsg-1ubuntu0.1~esm1 | USN-8411-1 |
| Ubuntu Pro 24.04 LTS | node-lodash | 4.17.21+dfsg+~cs8.31.198.20210220-9ubuntu0.24.04.1~esm1 | USN-8411-1 |
| Ubuntu Pro 22.04 LTS | node-lodash | 4.17.21+dfsg+~cs8.31.198.20210220-5ubuntu0.1~esm1 | USN-8411-1 |
| Ubuntu Pro 20.04 LTS | node-lodash | 4.17.15+dfsg-2ubuntu0.1~esm1 | USN-8411-1 |
| Ubuntu Pro 18.04 LTS | node-lodash | 4.17.4+dfsg-1ubuntu0.1~esm1 | USN-8411-1 |
| Ubuntu Pro 16.04 LTS | node-lodash | 2.4.1+dfsg-3ubuntu0.1~esm1 | USN-8411-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhev Manager 4 | ovirt-engine-ui-extensions | 1.2.6-1.el8ev | RHSA-2021:2179 |
| Red Hat Rhev Manager 4 | ovirt-web-ui | 1.6.9-1.el8ev | RHSA-2021:2179 |
| Red Hat Rhev Hypervisor 4 | cockpit-ovirt +1 | 0.15.1-2.el8ev | RHSA-2021:3459 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | js-jquery | No fix yet | — |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
GitHub 2 repositories
-
mcpmark-eval-liuhezi/ghsa-lodash-ci-7f3c9a ★ 0 · Nov 12, 2026
Dependency-review rehearsal for the reviewed lodash advisory CVE-2021-23337.
-
khayashi4337/lodash.template-fixed ★ 0 · Mar 1, 2026
Fork of lodash.template with CVE-2021-23337 fix (command injection via variable option)
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Automated scanner template
A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.
- Lodash Template - Server-Side Template Injection (RCE) http/cves/2021/CVE-2021-23337.yaml
Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | lodash | < 4.17.21 | 4.17.21 | GHSA-35jh-r3h4-6jhm |
| npm | lodash-es | < 4.17.21 | 4.17.21 | GHSA-35jh-r3h4-6jhm |
| npm | lodash-template | <= 1.0.0 | — | GHSA-35jh-r3h4-6jhm |
| npm | lodash.template | <= 4.5.0 | — | GHSA-35jh-r3h4-6jhm |
| RubyGems | lodash-rails | < 4.17.21 | 4.17.21 | GHSA-35jh-r3h4-6jhm |
Advisories 12
- WID-SEC-2026-3046 IBM Concert: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 10, 2026
- USN-8411-1 node-lodash vulnerabilities Ubuntu Security Notices (USN) · Oct 27, 2026
- RHSA-2021:3459 Red Hat Security Advisory: Red Hat Virtualization Host security and bug fix update [ovirt-4.4.8] Red Hat Security Advisories (RHSA) · Oct 9, 2026
- RHSA-2021:2179 Red Hat Security Advisory: RHV Manager security update (ovirt-engine) [ovirt-4.4.6] Red Hat Security Advisories (RHSA) · Oct 9, 2026
- WID-SEC-2022-1384 Red Hat Virtualization: Mehrere Schwachstellen ermöglichen Denial of Service BSI CERT-Bund (WID) · Sep 13, 2026
- WID-SEC-2026-2260 IBM Operational Decision Manager: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jul 8, 2026
- WID-SEC-2026-1654 IBM App Connect Enterprise: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 28, 2026
- WID-SEC-2022-1375 JFrog Artifactory: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 12, 2025
- WID-SEC-2023-3025 IBM InfoSphere Information Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Dec 4, 2023
- WID-SEC-2023-0857 IBM QRadar SIEM: Mehrere Schwachstellen BSI CERT-Bund (WID) · Apr 4, 2023
- ICSA-22-258-05 Siemens SINEC INS CISA ICS & IT advisories · Sep 13, 2022
- SSA-637483 SSA-637483 Third-Party Component Vulnerabilities in SINEC INS before V1.0 SP2 Siemens ProductCERT · Sep 13, 2022
References
- https://snyk.io/vuln/SNYK-JS-LODASH-1040724
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1074928
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1074929
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARS-1074930
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWERGITHUBLODASH-1074931
- https://snyk.io/vuln/SNYK-JAVA-ORGFUJIONWEBJARS-1074932
- https://github.com/lodash/lodash/blob/ddfd9b11a0126db2302cb70ec9973b66baec0975/lodash.js%23L14851
- https://www.oracle.com//security-alerts/cpujul2021.html
- https://security.netapp.com/advisory/ntap-20210312-0006/
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://www.oracle.com/security-alerts/cpujan2022.html
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://cert-portal.siemens.com/productcert/pdf/ssa-637483.pdf