CVEvulnerability

CVE-2026-44266

9.8 CRITICAL Published 2026-11-03 Modified 2026-11-03 Official page ↗

Exploitation and prioritisation

CISA SSVC: exploitation
poc
CISA SSVC: automatable
yes
CISA SSVC: technical impact
total
EU Vulnerability Database
EUVD-2026-116110

Affected packages

EcosystemPackageVulnerableFixed inAdvisory
npm@enspirit/elo< 1.0.11.0.1GHSA-7w38-ggh5-v542
Status
Received
Published
2026-11-03
Last modified
2026-11-03
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-116, CWE-1336, CWE-94

Description

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.

Related

Weakness · CWE (3)

  • CWE-116 Improper Encoding or Escaping of Output weakness
  • CWE-1336 Improper Neutralization of Special Elements Used in a Template Engine weakness
  • CWE-94 Improper Control of Generation of Code weakness

Referenced by GitHub Advisory · alias (1)

  • GHSA-7w38-ggh5-v542 Elo Ruby backend has Remote Code Execution via unescaped `#{...}` interpolation in emitted string literals and subtype-constraint labels advisory · npm

References