CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се по мрежата, без особени условия, без вход и без действие от потребителя.
- Експлоатация: има публичен пример за експлоатация
- Атаката може да се автоматизира
Описание
Оригинално описание
Handlebars provides the power necessary to let users build semantic templates. In versions 4.0.0 through 4.7.8, when a Handlebars template contains decorator syntax referencing an unregistered decorator (e.g. `{{*n}}`), the compiled template calls `lookupProperty(decorators, "n")`, which returns `undefined`. The runtime then immediately invokes the result as a function, causing an unhandled `TypeError: ... is not a function` that crashes the Node.js process. Any application that compiles user-supplied templates without wrapping the call in a `try/catch` is vulnerable to a single-request Denial of Service. Version 4.7.9 fixes the issue. Some workarounds are available. Wrap compilation and rendering in `try/catch`. Validate template input before passing it to `compile()`; reject templates containing decorator syntax (`{{*...}}`) if decorators are not used in your application. Use the pre-compilation workflow; compile templates at build time and serve only pre-compiled templates; do not call `compile()` at request time.
Засегнати продукти
- handlebars-lang handlebars.js: >= 4.0.0, < 4.7.9
- Red Hat Cluster Observability Operator 1.5.0: 1782839279 преди *
- Red Hat Red Hat OpenShift Dev Spaces 3.27: 1776744110 преди *
- Red Hat Cryostat 4
- Red Hat Logging Subsystem for Red Hat OpenShift
- Red Hat Red Hat Data Grid 8
- Red Hat Red Hat Enterprise Linux 10
- Red Hat Red Hat Enterprise Linux 7
- Red Hat Red Hat Enterprise Linux 8
- Red Hat Red Hat Enterprise Linux 9
- Red Hat Red Hat OpenShift AI (RHOAI)
- Red Hat Red Hat Process Automation 7
Вид слабост
История
- 27 март 2026 Публикувано
Други уязвимости в handlebars-lang handlebars.js
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-33939
- https://nvd.nist.gov/vuln/detail/CVE-2026-33939
- https://github.com/handlebars-lang/handlebars.js/security/advisories/GHSA-9cx6-37pm-9jff
- https://github.com/handlebars-lang/handlebars.js/commit/68d8df5a88e0a26fe9e6084c5c6aaebe67b07da2
- https://github.com/handlebars-lang/handlebars.js/releases/tag/v4.7.9
- https://access.redhat.com/security/cve/CVE-2026-33939
- https://bugzilla.redhat.com/show_bug.cgi?id=2452508
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33939.json
- https://access.redhat.com/errata/RHSA-2026:34342
- https://access.redhat.com/errata/RHSA-2026:10175