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CVE-2026-33937Handlebars.js has JavaScript Injection via AST Type Confusion

handlebars-lang handlebars.js; Red Hat Cluster Observability Operator 1.5.0; Red Hat Red Hat OpenShift Dev Spaces 3.27; Red Hat Cryostat 4 Veröffentlicht: (vor 7 Monaten)

Beschreibung

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.

Schwachstellentyp (CWE): CWE-843CWE-94

Daten: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Wiedergegeben wie in der Quelle, auf Englisch.

Betroffene Produkte und Versionen

HerstellerProduktVersionen
cluster observability operator 1.5 —
handlebars-lang handlebars.js >= 4.0.0, < 4.7.9
handlebarsjs handlebars 4.0.0 – < 4.7.9
openshift devspaces 3.27 —
Red Hat Cluster Observability Operator 1.5.0 all versions
Red Hat Cryostat 4 —
Red Hat Logging Subsystem for Red Hat OpenShift all versions
Red Hat Red Hat Data Grid 8 —
Red Hat Red Hat Developer Hub all versions
Red Hat Red Hat Enterprise Linux 10 all versions
Red Hat Red Hat Enterprise Linux 7 —
Red Hat Red Hat Enterprise Linux 8 all versions
Red Hat Red Hat Enterprise Linux 9 all versions
Red Hat Red Hat OpenShift AI (RHOAI) —
Red Hat Red Hat OpenShift Dev Spaces —
Red Hat Red Hat OpenShift Dev Spaces 3.27 all versions
Red Hat Red Hat Process Automation 7 —

Referenzen und Patches

CPE-Treffer (NVD) (1)
  • cpe:2.3:a:handlebarsjs:handlebars:*:*:*:*:*:node.js:*:* ≥ 4.0.0 < 4.7.9

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