Vulnerability Description
LiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript. From 10.26.0 until 10.27.1, the strip_html filter in src/filters/html.ts can enter an infinite loop when an input string contains <, includes at least one preceding character, and has no later >. In strip_html, the search for the next opener advances lt while the loop index remains unchanged when the closer search returns -1, and the equality-only stall guard does not exit because the loop index is less than lt. Reprocessing the same state indefinitely blocks template rendering and can cause denial of service with an input as short as a<. This issue is fixed in version 10.27.1.
Related Weaknesses (CWE)
References
- https://github.com/harttle/liquidjs/commit/5c3522f33928aae66f0fe85c36e1d9015c768
- https://github.com/harttle/liquidjs/pull/917
- https://github.com/harttle/liquidjs/releases/tag/v10.27.1
- https://github.com/harttle/liquidjs/security/advisories/GHSA-m7fp-h3p4-hr49
FAQ
What is CVE-2026-61556?
CVE-2026-61556 is a documented vulnerability. LiquidJS is a Shopify / GitHub Pages compatible template engine in pure JavaScript. From 10.26.0 until 10.27.1, the strip_html filter in src/filters/html.ts can enter an infinite loop when an input st...
How severe is CVE-2026-61556?
CVSS scoring is not yet available for CVE-2026-61556. Check NVD for updates.
Is there a patch for CVE-2026-61556?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.