{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "10.26.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3616a744b9abeb425c217b340a2397d46176afb8"
            },
            {
              "fixed": "c20c0af02d33e8d2ca6b08925eadca8755257c39"
            }
          ],
          "repo": "https://github.com/harttle/liquidjs",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-r7g9-xpmj-5fcq"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-1333"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45617.json"
  },
  "details": "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 \u003cscript, \u003cstyle, or \u003c!-- opener tokens without matching closers, the V8 regex engine performs O(N²) backtracking, blocking the Node.js event loop. A single ~350 KB request ('\u003cscript'.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.",
  "id": "CVE-2026-45617",
  "modified": "2026-08-12T03:51:44.478542399Z",
  "published": "2026-06-17T22:14:38.396Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/harttle/liquidjs/releases/tag/v10.26.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/45xxx/CVE-2026-45617.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/harttle/liquidjs/security/advisories/GHSA-r7g9-xpmj-5fcq"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45617"
    },
    {
      "type": "FIX",
      "url": "https://github.com/harttle/liquidjs/commit/3616a744b9abeb425c217b340a2397d46176afb8"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "LiquidJS: ReDoS via Quadratic Backtracking in `strip_html` Filter Regex"
}