{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-52842", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-06-08T18:41:27.724Z", "datePublished": "2026-07-15T16:18:26.157Z", "dateUpdated": "2026-07-15T16:35:28.146Z"}, "containers": {"cna": {"title": "Lightpanda:URL parser misidentifies page origin for URLs containing @ in the path - Same-Origin Policy bypass", "problemTypes": [{"descriptions": [{"cweId": "CWE-346", "lang": "en", "description": "CWE-346: Origin Validation Error", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"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"}}], "references": [{"name": "https://github.com/lightpanda-io/browser/security/advisories/GHSA-mq6p-m9cc-q432", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/lightpanda-io/browser/security/advisories/GHSA-mq6p-m9cc-q432"}, {"name": "https://github.com/lightpanda-io/browser/pull/1998", "tags": ["x_refsource_MISC"], "url": "https://github.com/lightpanda-io/browser/pull/1998"}, {"name": "https://github.com/lightpanda-io/browser/commit/0588cc374d4af9687cf6f45a7d52f7af04bbacfb", "tags": ["x_refsource_MISC"], "url": "https://github.com/lightpanda-io/browser/commit/0588cc374d4af9687cf6f45a7d52f7af04bbacfb"}, {"name": "https://github.com/lightpanda-io/browser/releases/tag/0.3.1", "tags": ["x_refsource_MISC"], "url": "https://github.com/lightpanda-io/browser/releases/tag/0.3.1"}], "affected": [{"vendor": "lightpanda-io", "product": "browser", "versions": [{"version": "< 0.3.1", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-07-15T16:18:26.157Z"}, "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."}], "source": {"advisory": "GHSA-mq6p-m9cc-q432", "discovery": "UNKNOWN"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-07-15T16:35:12.169514Z", "id": "CVE-2026-52842", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-15T16:35:28.146Z"}}]}}

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