handlebars vulnerabilities and fixes

Recent CVEs affecting handlebars, with upgrade or downgrade steps. 6 tracked.

handlebars has 6 tracked vulnerabilities, 1 critical. A fixed release or vendor patch exists for 6. Most recent: 2026-03-27. Highest priority: CVE-2026-33937 (score 67/100).

• CVE-2026-33937 CRITICAL 9.8 UPGRADE Handlebars provides the power necessary to let users build semantic templates
• CVE-2026-33938 HIGH 8.1 UPGRADE Handlebars provides the power necessary to let users build semantic templates
• CVE-2026-33940 HIGH 8.1 UPGRADE Handlebars provides the power necessary to let users build semantic templates
• CVE-2026-33939 HIGH 7.5 UPGRADE Handlebars provides the power necessary to let users build semantic templates
• CVE-2026-33941 HIGH 8.2 UPGRADE Handlebars provides the power necessary to let users build semantic templates
• CVE-2026-33916 MEDIUM 4.7 UPGRADE Handlebars provides the power necessary to let users build semantic templates

FAQ

How do I fix handlebars vulnerabilities?

Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.

Is handlebars being exploited right now?

None of the tracked handlebars CVEs are on the CISA Known Exploited Vulnerabilities list at the moment. This is checked every 20 minutes.

Which handlebars CVE should I patch first?

CVE-2026-33937 currently ranks highest (67/100): Handlebars provides the power necessary to let users build semantic templates.

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