{"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"}}]}}