CVE-2026-33287: LiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript

This week

HIGH 7.5REMOTEUPGRADE

CVE-2026-33287 is a high-severity flaw (CVSS 7.5) affecting liquidjs. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 with

Why this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.5% (top 59%)
CISA exploited list	No
Weakness	CWE-20, CWE-400
Published	2026-03-26
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: liquidjs

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-26 01:16 UTCPublished CVE record published
2026-06-17 10:37 UTCUpdated Record last modified

liquidjs liquidjs UPGRADE

Affected: < 10.25.1

Fixed in: 10.25.1

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls liquidjs

2. UPGRADE to 10.25.1

npm install liquidjs@">=10.25.1"

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-33287?

liquidjs: upgrade to 10.25.1. Exact commands for each OS are on this page.

Is CVE-2026-33287 being exploited?

CVE-2026-33287 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-33287 affect?

CVE-2026-33287 affects liquidjs. Severity is high (CVSS 7.5). 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

How urgent is CVE-2026-33287?

Priority 47/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Software pages

GitHub vulnerabilities · Shopify vulnerabilities

Related CVEs

CVE-2026-34166 LOW 3.7 UPGRADE LiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript
CVE-2026-35525 HIGH 7.5 UPGRADE LiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript
CVE-2026-41311 HIGH 7.5 UPGRADE LiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript
CVE-2026-39859 HIGH 7.5 UPGRADE LiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript
CVE-2026-39412 MEDIUM 5.3 UPGRADE LiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript

References

← Back to latest CVEs