handlebars Known Vulnerabilities & Fixes
handlebars has 4 known security vulnerabilities in npm (Node.js). Upgrade to version 4.7.10 or later to resolve all known issues. Data sourced from OSV, enriched with EPSS exploit probability and CISA KEV.
Low Immediate Risk
No actively exploited vulnerabilities detected. Monitor and update in your next maintenance window.
Recommended safe version: 4.7.10
Upgrading to 4.7.10 or later resolves all 4 known vulnerabilities in handlebars. Run: npm install handlebars@4.7.10
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Security Summary
- 5 affected version ranges have been identified across these 4 advisories.
- 100% of known issues have a published fixed version.
- Remediation: npm update handlebars
Vulnerabilities
4 unique vulnerabilities — sorted by exploitation risk (KEV → EPSS → CVSS). Click a CVE/GHSA ID for full details. First disclosed Dec 26, 2019, most recently Oct 8, 2026 (2478 days apart).
| CVE / GHSA | Severity | Affected | Fixed In |
|---|---|---|---|
| CVE-2026-106446 Handlebars: JavaScript Injection via AST Type Confusion in compile (bypass of CVE-2026-33937) | CRITICAL | All versions | 4.7.10 |
| CVE-2026-33937 Handlebars.js has JavaScript Injection via AST Type Confusion | CRITICAL | All versions | 4.7.9 |
| CVE-2026-106445 Handlebars: JavaScript Injection via Own Property Check Bypass | CRITICAL | All versions | 4.7.10 |
| CVE-2019-19919 Prototype Pollution in handlebars | CRITICAL | All versions | 4.3.0, 3.0.8 |
About This Data
Vulnerability data for handlebars is sourced from the Open Source Vulnerability (OSV) database, aggregating reports from GitHub Advisory Database, NIST NVD, and ecosystem-specific sources.
CVSS (Common Vulnerability Scoring System) scores reflect exploitability and impact. EPSS (Exploit Prediction Scoring System) scores indicate the probability of exploitation within the next 30 days. Vulnerabilities marked with are listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.
Related npm (Node.js) Packages
Other packages in this ecosystem, ranked by shared vulnerabilities where available.
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