Inefficient Regular Expression Complexity Affecting kibana-9.4-advanced package, versions <9.4.3-r0
Threat Intelligence
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Test your applications- Snyk IDSNYK-MINIMOSLATEST-KIBANA94ADVANCED-17769387
- published2 Jul 2026
- disclosed17 Jun 2026
Introduced: 17 Jun 2026
NewCVE-2026-45617 (opens in a new tab)How to fix?
Upgrade Minimos:latest kibana-9.4-advanced to version 9.4.3-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kibana-9.4-advanced package and not the kibana-9.4-advanced package as distributed by Minimos.
See How to fix? for Minimos:latest relevant fixed versions and status.
LiquidJS is a Shopify/GitHub Pages compatible template engine written in pure JavaScript. In versions 10.25.7 and below, the built-in strip_html filter uses a regex containing four flawed lazy-quantified alternatives, leading to ReDoS via quadratic backtracking. When the input contains many <script, <style, or <!-- opener tokens without matching closers, the V8 regex engine performs O(N²) backtracking, blocking the Node.js event loop. A single ~350 KB request ('<script'.repeat(50000)) stalls the process for ~10 seconds; cost grows quadratically with input size. The default memoryLimit: Infinity does not bound regex CPU, and even when configured strip_html only charges str.length to the limit — the regex itself runs unbounded. A single unauthenticated request containing crafted untrusted input can cause severe event-loop blocking and CPU amplification that saturates Node.js workers while bypassing memoryLimit protections. This issue has been fixed in version 10.26.0.
References
- https://www.cve.org/CVERecord?id=CVE-2026-45617
- https://github.com/advisories/GHSA-r7g9-xpmj-5fcq
- https://osv.dev/vulnerability/MINI-hf2w-6fq8-pw27
- https://osv.dev/vulnerability/CVE-2026-45617
- https://github.com/harttle/liquidjs/commit/3616a744b9abeb425c217b340a2397d46176afb8
- https://github.com/harttle/liquidjs/releases/tag/v10.26.0
- https://github.com/harttle/liquidjs/security/advisories/GHSA-r7g9-xpmj-5fcq