CVE-2026-44644

{
  "id": "CVE-2026-44644",
  "sourceIdentifier": "[email protected]",
  "published": "2026-06-17T23:17:03.463",
  "lastModified": "2026-10-26T11:10:00.157",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "LiquidJS is a Shopify/GitHub Pages compatible template engine written in pure JavaScript. Versions 10.25.7 and below are vulnerable to XSS through a flaw in the strip_html filter logic. The strip_html filter is intended to remove HTML tags from a string before rendering, and is widely used as an XSS sanitizer. The implementation uses a regex whose catch-all branch (<.*?>) does not match line terminators, so any HTML tag containing a \\n or \\r character passes through unmodified. An attacker who can place a newline inside a tag (e.g. <img\\nsrc=x\\nonerror=alert(1)>) bypasses sanitization entirely, since browsers treat newlines as whitespace within a tag and execute the resulting onerror/onload/etc. handler. Exploitation is possible for applications that both render attacker-controlled strings via {{ x | strip_html }} to defend against HTML injection and do not separately HTML-escape that output (default behavior — outputEscape is unset by default). This issue has been fixed in version 10.26.0."
    },
    {
      "lang": "es",
      "value": "LiquidJS es un motor de plantillas compatible con Shopify/GitHub Pages escrito en JavaScript puro. Las versiones 10.25.7 e inferiores son vulnerables a XSS debido a una falla en la lógica del filtro strip_html. El filtro strip_html está diseñado para eliminar etiquetas HTML de una cadena antes de la renderización, y es ampliamente utilizado como un saneador de XSS. La implementación utiliza una expresión regular (regex) cuya rama comodín (<.* [código_PHP_PoC] ) no coincide con los terminadores de línea, por lo que cualquier etiqueta HTML que contenga un carácter \\n o \\r pasa sin modificar. Un atacante que puede colocar un salto de línea dentro de una etiqueta (p. ej., <img\\nsrc=x\\nonerror=alert(1)>) elude completamente la sanitización, ya que los navegadores tratan los saltos de línea como espacios en blanco dentro de una etiqueta y ejecutan el gestor onerror/onload/etc. resultante. La explotación es posible para aplicaciones que tanto renderizan cadenas controladas por el atacante a través de {{ x | strip_html }} para defenderse contra la inyección HTML como no escapan por separado esa salida HTML (comportamiento predeterminado - outputEscape no está configurado por defecto). Este problema ha sido solucionado en la versión 10.26.0."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "harttle",
          "product": "liquidjs",
          "versions": [
            {
              "version": "< 10.26.0",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N",
          "baseScore": 6.1,
          "baseSeverity": "MEDIUM",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "CHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 2.7
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-06-18T13:09:01.490176Z",
          "id": "CVE-2026-44644",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/harttle/liquidjs/commit/26ea2856c7a90aec892b98d94a9b7a3e18539045",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/harttle/liquidjs/releases/tag/v10.26.0",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/harttle/liquidjs/security/advisories/GHSA-2qv6-9wx5-cwv4",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/harttle/liquidjs/security/advisories/GHSA-2qv6-9wx5-cwv4",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ]
}