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CVE-2026-106120

CVE-2026-106120 · LiquidJS: ownPropertyOnly bypass for inherited array indices in first/last/join/reverse/slice/compact, `.first`/`.last`, negative index, and for-loop iteration

This page contains facts from public vulnerability sources. Check the original advisory before updating.

LiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript. Prior to 10.27.2, enabling ownPropertyOnly does not consistently restrict inherited array indices because negative indexing, .first, .last, the first filter, the last filter, join, reverse, slice, compact, and for-loop iteration can read prototype-provided elements outside readJSProperty(). An attacker who can influence prototype state or inherited array-index data and cause templates to render affected operations can disclose values that ownPropertyOnly is expected to hide. Direct positive indexing and ordinary object prototype reads are blocked, but the alternate array paths remain affected. This issue is fixed in 10.27.2.

CVSS 6.0 · Medium · EPSS 0.4% · Public exploit · Fix available

Published
Updated

Stack: node

Affected products and versions

  • liquidjs

    Versions
    • < 10.27.2: Affected

    No fix published

  • liquidjs npm

    Affected ranges
    • SEMVER: < 10.27.2

    Update to 10.27.2

Original sources

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