CVE-2026-52842

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{"affected": [{"affectedData": [{"product": "browser", "vendor": "lightpanda-io", "versions": [{"status": "affected", "version": "< 0.3.1"}]}], "source": "security-advisories@github.com"}], "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 gr\u00e1fica dise\u00f1ado para IA y automatizaci\u00f3n. Antes de la versi\u00f3n 0.3.1, Lightpanda buscaba \u2019@\u2019 en toda la cadena de la URL en lugar de solo en el componente de autoridad al calcular el origen de una p\u00e1gina, as\u00ed, una URL como \u201chttp://atacante.com/@victim.com/\u201d se obten\u00eda de atacante.com pero se trataba como \u201chttp://victim.com\u201d, lo que permit\u00eda una elusi\u00f3n completa de la Pol\u00edtica del Mismo Origen. Este problema est\u00e1 solucionado en la versi\u00f3n 0.3.1."}], "id": "CVE-2026-52842", "lastModified": "2026-10-24T21:10:00.130", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 9.3, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.8, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-52842", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-07-15T16:35:12.169514Z", "version": "2.0.3"}}]}, "published": "2026-07-15T17:16:50.317", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/lightpanda-io/browser/commit/0588cc374d4af9687cf6f45a7d52f7af04bbacfb"}, {"source": "security-advisories@github.com", "url": "https://github.com/lightpanda-io/browser/pull/1998"}, {"source": "security-advisories@github.com", "url": "https://github.com/lightpanda-io/browser/releases/tag/0.3.1"}, {"source": "security-advisories@github.com", "url": "https://github.com/lightpanda-io/browser/security/advisories/GHSA-mq6p-m9cc-q432"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-346"}], "source": "security-advisories@github.com", "type": "Primary"}]}

{}

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