CVE-2026-45357

{
  "id": "CVE-2026-45357",
  "sourceIdentifier": "[email protected]",
  "published": "2026-06-17T23:17:03.893",
  "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. In versions 10.25.7 and below, the date filter's strftime implementation parses width specifiers like %9999999d and forwards the captured width unchecked into pad()/padStart(), leading to memory and render limit bypass. In src/util/underscore.ts, the pad loop performs unbounded string concatenation without consulting the Context's memoryLimit or renderLimit, so a single small template ({{ x | date: '%5000000d' }}) produces megabytes of output and unbounded CPU. The memoryLimit and renderLimit options the docs (src/liquid-options.ts:87-92) advertise as DoS controls — and which the docstring explicitly mentions for strftime — are entirely bypassed. Exploitation can cause large memory allocations, high CPU usage, or OOM crashes per render. 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. En las versiones 10.25.7 e inferiores, la implementación de strftime del filtro de fecha analiza especificadores de ancho como %9999999d y reenvía el ancho capturado sin verificar a pad()/padStart(), lo que lleva a la omisión de los límites de memoria y renderizado. En src/util/underscore.ts, el bucle de relleno realiza una concatenación de cadenas ilimitada sin consultar memoryLimit o renderLimit del Contexto, por lo que una única plantilla pequeña ({{ x | date: ’%5000000d’ }}) produce megabytes de salida y un uso ilimitado de CPU. Las opciones memoryLimit y renderLimit que la documentación (src/liquid-options.ts:87-92) anuncia como controles de DoS -y que la cadena de documentación menciona explícitamente para strftime- son completamente omitidas. La explotación puede causar grandes asignaciones de memoria, alto uso de CPU o fallos OOM por renderizado. 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:N/S:U/C:N/I:N/A:H",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-06-18T12:48:36.994250Z",
          "id": "CVE-2026-45357",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/harttle/liquidjs/commit/3129d46dc95efa357b00e5a57ee1af80a13d72ed",
      "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-hh27-hf48-9f5q",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/harttle/liquidjs/security/advisories/GHSA-hh27-hf48-9f5q",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ]
}