{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-11278", "assignerOrgId": "ebfee0ef-53dd-4cf3-9e2a-08a5bd7a7e28", "state": "PUBLISHED", "assignerShortName": "Chrome", "dateReserved": "2026-06-04T17:11:13.367Z", "datePublished": "2026-06-04T23:06:15.713Z", "dateUpdated": "2026-06-05T19:26:39.320Z"}, "containers": {"cna": {"affected": [{"vendor": "Google", "product": "Chrome", "versions": [{"version": "149.0.7827.53", "status": "affected", "lessThan": "149.0.7827.53", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "Inappropriate implementation in CustomTabs in Google Chrome on Android prior to 149.0.7827.53 allowed a local attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Low)"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Inappropriate implementation"}]}], "providerMetadata": {"orgId": "ebfee0ef-53dd-4cf3-9e2a-08a5bd7a7e28", "shortName": "Chrome", "dateUpdated": "2026-06-04T23:06:15.713Z"}, "references": [{"url": "https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html"}, {"url": "https://issues.chromium.org/issues/501859865"}]}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-346", "lang": "en", "description": "CWE-346 Origin Validation Error"}]}], "metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 6.5, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-06-05T19:26:33.516011Z", "id": "CVE-2026-11278", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-05T19:26:39.320Z"}}]}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "Inappropriate implementation in CustomTabs in Google Chrome on Android prior to 149.0.7827.53 allowed a local attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Low)"}], "id": "CVE-2026-11278", "lastModified": "2026-06-05T20:17:25.070", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2026-06-05T00:17:04.993", "references": [{"source": "chrome-cve-admin@google.com", "url": "https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html"}, {"source": "chrome-cve-admin@google.com", "url": "https://issues.chromium.org/issues/501859865"}], "sourceIdentifier": "chrome-cve-admin@google.com", "vulnStatus": "Undergoing Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-346"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "chromium-browser: Inappropriate implementation in CustomTabs", "id": "2485272", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2485272"}, "csaw": false, "cvss3": {"cvss3_base_score": "3.3", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N", "status": "draft"}, "cwe": "CWE-79", "details": ["Inappropriate implementation in CustomTabs in Google Chrome on Android prior to 149.0.7827.53 allowed a local attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Low)", "An inappropriate implementation flaw was found in the CustomTabs component of the Chromium browser.\nUpstream bug(s):\nhttps://code.google.com/p/chromium/issues/detail?id=501859865"], "name": "CVE-2026-11278", "public_date": "2026-06-02T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-11278\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-11278\nhttps://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html\nhttps://issues.chromium.org/issues/501859865"], "statement": "Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory.", "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[149.0.7827.53,149.0.7827.53)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Chrome", "source": "cna", "vendor": "Google"}, "product": "chrome", "vendor": "google"}], "created": "2026-06-05T01:00:15.849322+00:00", "title": "CustomTabs Cross-Origin Data Leak in Google Chrome on Android", "updated": "2026-06-07T16:30:04.088014+00:00", "vendors": ["google", "google$PRODUCT$chrome"]}