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Including CVEs outside Waratek scope✕Vendor handlebarsjs✕
Overview 3 matches · 0 in Waratek scope · 0 protected · 0 exploited · 0 CISA KEV · 0 public PoC · 0 EPSS ≥ 0.5
3matches 0in Waratek scope0.0% 0protected0.0% 0exploited0.0% 0CISA KEV0.0% 0public PoC0.0% 0EPSS ≥ 0.50.0%
Protected by Waratek 0 0.0% Rule in development 0 0.0% Mitigation candidate 0 0.0% No exploit published 0 0.0% Outside Waratek scope 1 33.3% Not applicable 2 66.7% Withdrawn CVE 0 0.0%
Critical 3 100.0% High 0 0.0% Medium 0 0.0% Low 0 0.0% None 0 0.0% Unknown 0 0.0%
blocked by ARMR today 0 0.0% partly blocked 0 0.0% not blocked 3 100.0% not established 0 0.0% unrecorded 0 0.0%
Exploited 0 0.0% Working exploit published 0 0.0% Proof of concept only 1 33.3% Forecast only 0 0.0% No public exploit 2 66.7%
split by peak 2 / quarter
Not applicable: 2Outside Waratek scope: 1 Critical: 3 not blocked: 3 No public exploit: 2Proof of concept only: 1
Q2 212 Outside Waratek scope1 Not applicable1 Critical2 not blocked2 No public exploit2 Q3 210 Q4 210 Q1 220 Q2 220 Q3 220 Q4 220 Q1 230 Q2 230 Q3 230 Q4 230 Q1 240 Q2 240 Q3 240 Q4 240 Q1 250 Q2 250 Q3 250 Q4 250 Q1 261 Not applicable1 Critical1 not blocked1 Proof of concept only1
Q3 21Q1 22Q3 22Q1 23Q3 23Q1 24Q3 24Q1 25Q3 25Q1 26
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CVE Severity Published▾ Status Exploitation Description
CVE-2026-33937 Critical 2026-03-27 Not applicable Proof of concept only Handlebars provides the power necessary to let users build semantic templates. In versions 4.0.0 through 4.7.8, `Handlebars.compile()` accepts a pre-parsed AST object in addition to a template string. The `value` field of a `NumberLiteral` AST node is emitted directly into the generated JavaScript without quoting or sanitization. An attacker who can supply a crafted AST to `compile()` can therefore inject and execute arbitrary JavaScript, leading to Remote Code Execution on the server. Version 4.7.9 fixes the issue. Some workarounds are available. Validate input type before calling `Handlebars.compile()`; ensure the argument is always a `string`, never a plain object or JSON-deserialized value. Use the Handlebars runtime-only build (`handlebars/runtime`) on the server if templates are pre-compiled at build time; `compile()` will be unavailable.
CVE-2021-23383 Critical 2021-05-04 Outside Waratek scope No public exploit The package handlebars before 4.7.7 are vulnerable to Prototype Pollution when selecting certain compiling options to compile templates coming from an untrusted source.
CVE-2021-23369 Critical 2021-04-12 Not applicable No public exploit 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.