GHSA-fwxr-j5w2-587m: liquidjs (CVE-2026-106120)

Package	Ecosystem	Affected	Fixed in
liquidjs	npm	<10.27.2	10.27.2

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

LiquidJS versions before 10.27.2 fail to honor the ownPropertyOnly option for inherited array indices. When that option is enabled, values inherited through Array.prototype can still be read through array filters such as first, last, join, reverse, slice and compact, through the .first and .last properties, through negative indexing, and through for-loop iteration. An attacker who can influence prototype state or inherited array-index data could cause a template to disclose values that ownPropertyOnly is meant to hide. Upgrade liquidjs to 10.27.2 or later.

Written 31 Oct 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
6.0	Medium	4.0	CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N	CNA (GitHub_M)

CISA KEV Not listed.
EPSS 0.0041, the 35th percentile, on 13 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 13:33 UTC First seen by agentprime
31 Oct 2026, 13:33 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.