CVE-2026-52842

{
  "id": "CVE-2026-52842",
  "sourceIdentifier": "[email protected]",
  "published": "2026-07-15T17:16:50.317",
  "lastModified": "2026-10-24T21:10:00.130",
  "vulnStatus": "Deferred",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Lightpanda is a headless browser designed for AI and automation. Prior to 0.3.1, Lightpanda searched for @ across the entire URL string instead of only the authority component when computing a page origin, so a URL such as `http://attacker.com/@victim.com/` was fetched from attacker.com but treated as `http://victim.com`, allowing a complete Same-Origin Policy bypass. This issue is fixed in version 0.3.1."
    },
    {
      "lang": "es",
      "value": "Lightpanda es un navegador sin interfaz gráfica diseñado para IA y automatización. Antes de la versión 0.3.1, Lightpanda buscaba ’@’ en toda la cadena de la URL en lugar de solo en el componente de autoridad al calcular el origen de una página, así, una URL como “http://atacante.com/@victim.com/” se obtenía de atacante.com pero se trataba como “http://victim.com”, lo que permitía una elusión completa de la Política del Mismo Origen. Este problema está solucionado en la versión 0.3.1."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "lightpanda-io",
          "product": "browser",
          "versions": [
            {
              "version": "< 0.3.1",
              "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:H/I:H/A:N",
          "baseScore": 9.3,
          "baseSeverity": "CRITICAL",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "CHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "NONE"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.8
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-07-15T16:35:12.169514Z",
          "id": "CVE-2026-52842",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-346"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/lightpanda-io/browser/commit/0588cc374d4af9687cf6f45a7d52f7af04bbacfb",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/lightpanda-io/browser/pull/1998",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/lightpanda-io/browser/releases/tag/0.3.1",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/lightpanda-io/browser/security/advisories/GHSA-mq6p-m9cc-q432",
      "source": "[email protected]"
    }
  ]
}