Description
The package handlebars before 4.7.7 are vulnerable to Remote Code Execution (RCE) when selecting certain compiling options to compile templates coming from an untrusted source.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | handlebars | unspecified – < 4.7.7 | 4.7.7 |
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-handlebars | 3:4.7.6+~4.1.0-2 | — |
| Debian 13 | node-handlebars | 3:4.7.6+~4.1.0-2 | — |
| Debian 12 | node-handlebars | 3:4.7.6+~4.1.0-2 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | node-handlebars | No fix yet | — |
| Ubuntu 18.04 LTS | node-handlebars | 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
-
fazilbaig1/CVE-2021-23369 ★ 2 · Oct 19, 2024
Handlebars CVE-2021-23369 Vulnerability
-
dinhvaren/cve-2021-23369 ★ 0 · Mar 28, 2026
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Maven | org.webjars:handlebars | < 4.7.7 | 4.7.7 | GHSA-f2jv-r9rf-7988 |
| Maven | org.webjars.bowergithub.wycats:handlebars.js | < 4.7.7 | 4.7.7 | GHSA-f2jv-r9rf-7988 |
| Maven | org.webjars.npm:handlebars | < 4.7.7 | 4.7.7 | GHSA-f2jv-r9rf-7988 |
| npm | handlebars | < 4.7.7 | 4.7.7 | GHSA-f2jv-r9rf-7988 |
Advisories 3
- WID-SEC-2024-0899 Oracle Fusion Middleware: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 9, 2025
- WID-SEC-2023-3032 Tenable Security Nessus Network Monitor: Mehrere Schwachstellen BSI CERT-Bund (WID) · Dec 4, 2023
- WID-SEC-2022-1646 Red Hat OpenShift: Mehrere Schwachstellen ermöglichen Codeausführung BSI CERT-Bund (WID) · Dec 19, 2022
References
- https://snyk.io/vuln/SNYK-JS-HANDLEBARS-1056767
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARS-1074950
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSBOWER-1074951
- https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1074952
- https://github.com/handlebars-lang/handlebars.js/commit/b6d3de7123eebba603e321f04afdbae608e8fea8
- https://github.com/handlebars-lang/handlebars.js/commit/f0589701698268578199be25285b2ebea1c1e427
- https://security.netapp.com/advisory/ntap-20210604-0008/