What is CVE-2026-34166?

CVE-2026-34166 is a low-severity vulnerability in Harttle Liquidjs, classified under Uncontrolled Resource Consumption. CVSS score: 3.7/10. Published 2026-04-08.

How severe is CVE-2026-34166?

Low severity. CVSS v3 base score is 3.7 out of 10.

Resource exhaustion in Harttle Liquidjs

CVE-2026-34166

LiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript. Prior to 10.25.3, the replace filter in LiquidJS incorrectly accounts for memory usage when the memoryLimit option is enabled. It charges str.length + patt…

Vulnerability class: DoS (Denial of Service)

EPSS: 0.000 (6.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L.

Affected products

Harttle Liquidjs — versions < 10.25.3

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

https://github.com/harttle/liquidjs/security/advisories/GHSA-mmg9-6m6j-jqqx (x_refsource_CONFIRM)
https://github.com/harttle/liquidjs/commit/abc058be0f33d6372cd2216f4945183167abeb25 (x_refsource_MISC)
https://github.com/harttle/liquidjs/releases/tag/v10.25.3 (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-34166?: CVE-2026-34166 is a low-severity vulnerability in Harttle Liquidjs, classified under Uncontrolled Resource Consumption. CVSS score: 3.7/10. Published 2026-04-08.
How severe is CVE-2026-34166?: Low severity. CVSS v3 base score is 3.7 out of 10.