CVE Watch3 nov 2026

CVE-2026-44266

Elo is a purely functional expression language for no-code tools. Prior to 1.0.1, the Ruby backend in src/compilers/ruby.ts embeds attacker-

CVSS

9.8

Crítico

EPSS

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KEV

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Exploit Today

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0-100

Publicado: 3 nov 2026 · Última mod.: 3 nov 2026 · CWE-94 · CWE-116 · CWE-1336

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

Elo is a purely functional expression language for no-code tools. Prior to 1.0.1, the Ruby backend in src/compilers/ruby.ts embeds attacker-controlled text in Ruby double-quoted strings without escaping #, so Ruby interpolation forms in the string-literal emitter or the labelled subtype-constraint branch become executable Ruby. The affected entry points include the /try playground with the Ruby target, bin/eloc -t ruby -x, and defaultFormats.elo.parse() followed by Ruby emission. A failing labelled subtype constraint evaluates its message, while an ordinary string literal is evaluated when the compiled Ruby runs, allowing Ruby code and shell command execution through backticks. JavaScript, Python, and SQL emission are not affected by this Ruby-specific path. This issue is fixed in version 1.0.1.

Referencias oficiales

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