← Vulnerability feed

Vulnerability record · CVE-2026-33287 · published 26 March 2026

CVE-2026-33287: Liquidjs improper input validation vulnerability

Liquidjs · Liquidjs

LiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript. Prior to version 10.25.1, the `replace_first` filter in LiquidJS uses JavaScript's `String.prototype.replace()` which interprets `$&` as a back reference to the matched substring. The filter only charges `memoryLimit` for the input string length, not the amplified output. An attacker can achieve exponential memory amplification (up to 625,000:1) while staying within the `memoryLimit` budget, leading to denial of service. Version 10.25.1 patches the issue.

7.5 CVSS 3.1 High EPSS 0.52% · top 58.5% CWE-20 · Improper input validationCWE-400 · Uncontrolled resource consumption
7.5CVSS 3.1 base score
0.52%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

LiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript. Prior to version 10.25.1, the `replace_first` filter in LiquidJS uses JavaScript's `String.prototype.replace()` which interprets `$&` as a back reference to the matched substring. The filter only charges `memoryLimit` for the input string length, not the amplified output. An attacker can achieve exponential memory amplification (up to 625,000:1) while staying within the `memoryLimit` budget, leading to denial of service. Version 10.25.1 patches the issue.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/harttle/liquidjs/commit/35d523026345d80458df24c72e653db78b5d061d Patch
https://github.com/harttle/liquidjs/security/advisories/GHSA-6q5m-63h6-5x4v ExploitVendor Advisory
https://github.com/harttle/liquidjs/security/advisories/GHSA-6q5m-63h6-5x4v ExploitVendor Advisory

Track CVE-2026-33287 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

8.7CVE-2026-30952Liquidjs path traversal vulnerabilityliquidjs is a Shopify / GitHub Pages compatible template engine in pure JavaScript. Prior to 10.25.0, the layout, render, and include tags allow arbi…EPSS 0.54%8.2CVE-2026-35525Liquidjs vulnerabilityLiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript. Prior to 10.25.3, for {% include %}, {% render %}, and {% layout …EPSS 0.52%7.5CVE-2026-39412Liquidjs information exposure vulnerabilityLiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript. Prior to 10.25.4, the sort_natural filter bypasses the ownPropert…EPSS 0.47%7.5CVE-2026-33285Liquidjs improper input validation vulnerabilityLiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript. Prior to version 10.25.1, LiquidJS's `memoryLimit` security mecha…EPSS 0.60%6.5CVE-2026-41311Liquidjs vulnerabilityLiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript. Prior to version 10.25.7, a circular block reference in {% layout…EPSS 0.59%6.3CVE-2026-39859Liquidjs path traversal vulnerabilityLiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript. Prior to 10.25.3, liquidjs 10.25.0 documents root as constraining…EPSS 0.50%5.3CVE-2026-34166Liquidjs uncontrolled resource consumption vulnerabilityLiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript. Prior to 10.25.3, the replace filter in LiquidJS incorrectly acco…EPSS 0.57%5.3CVE-2022-25948Liquidjs information exposure vulnerabilityThe package liquidjs before 10.0.0 are vulnerable to Information Exposure when ownPropertyOnly parameter is set to False, which results in leaking pr…EPSS 0.82%

Source: NIST National Vulnerability Database (record CVE-2026-33287), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.