Vulnerability · Published Mar 26, 2026 · Assigned by GitHub_M

CVE-2026-33285LiquidJS: memoryLimit Bypass through Negative Range Values Leads to Process Crash

High 7.5

In plain English

A high-severity improper input validation in liquidjs from harttle. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.4%top 64.1% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

LiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript. Prior to version 10.25.1, LiquidJS's `memoryLimit` security mechanism can be completely bypassed by using reverse range expressions (e.g., `(100000000..1)`), allowing an attacker to allocate unlimited memory. Combined with a string flattening operation (e.g., `replace` filter), this causes a V8 Fatal error that crashes the Node.js process, resulting in complete denial of service from a single HTTP request. Version 10.25.1 patches the issue.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	liquidjs	no fix listed	GHSA-9r5m-9576-7f6x

Affected products (as reported)

Vendor	Product	Versions
harttle	liquidjs	< 10.25.1

Weakness: CWE-20, CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

https://github.com/harttle/liquidjs/security/advisories/GHSA-9r5m-9576-7f6x x_refsource_CONFIRM
https://github.com/harttle/liquidjs/commit/95ddefc056a11a44d9e753fd47a39db2c241e578 x_refsource_MISC