CVE-2026-69222 LiquidJS: Uncontrolled Resource Consumption in `join` filter allows template authors to bypass `memoryLimit` and crash the process
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-69222?
CVE-2026-69222 is a high-severity vulnerability in harttle liquidjs, published on 19 Aug 2026.
Official description
LiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript. Prior to 10.27.2, the join filter in src/filters/array.ts computes complexity from array.length and separator length instead of the total string length produced by array.join(sep). The concat filter can cheaply double arrays of references, after which join materializes the referenced content while charging only for element count, allowing a template to exceed a configured memoryLimit by a large factor. The sibling array_to_sentence_string filter in src/filters/string.ts has the same accounting defect, and a crafted template can allocate toward V8's string or process memory limit and crash the process. This issue is fixed in version 10.27.2.
Weakness: CWE-400
Which versions are affected by CVE-2026-69222?
2 open source packages ship an affected version, including liquidjs.
| Package | Affected | Fixed in |
|---|---|---|
liquidjs npm | All versions | 10.27.2 |
liquidjs npm | All versions | 10.27.2 |
How do I fix CVE-2026-69222?
Upgrade liquidjs to 10.27.2 or later.
Is CVE-2026-69222 being exploited?
There is no known exploitation of CVE-2026-69222 in the wild and no public exploit code.
Sources
Also known as GHSA-4r6h-5v86-94p3, MINI-8wqf-h6r6-7c6q, MINI-9ch6-mxwr-p3hp, MINI-px56-6rrg-f85w.