{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-9986", "assignerOrgId": "ebfee0ef-53dd-4cf3-9e2a-08a5bd7a7e28", "state": "PUBLISHED", "assignerShortName": "Chrome", "dateReserved": "2026-05-28T17:25:08.137Z", "datePublished": "2026-05-28T22:25:46.348Z", "dateUpdated": "2026-05-28T22:25:46.348Z"}, "containers": {"cna": {"affected": [{"vendor": "Google", "product": "Chrome", "versions": [{"version": "148.0.7778.216", "status": "affected", "lessThan": "148.0.7778.216", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "Insufficient validation of untrusted input in OptimizationGuide in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to perform UI spoofing via a crafted HTML page. (Chromium security severity: High)"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Insufficient validation of untrusted input", "cweId": "CWE-20"}]}], "providerMetadata": {"orgId": "ebfee0ef-53dd-4cf3-9e2a-08a5bd7a7e28", "shortName": "Chrome", "dateUpdated": "2026-05-28T22:25:46.348Z"}, "references": [{"url": "https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html"}, {"url": "https://issues.chromium.org/issues/513028160"}]}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Insufficient validation of untrusted input in OptimizationGuide in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to perform UI spoofing via a crafted HTML page. (Chromium security severity: High)"}], "id": "CVE-2026-9986", "lastModified": "2026-05-29T02:35:42.620", "metrics": {}, "published": "2026-05-28T23:16:56.840", "references": [{"source": "chrome-cve-admin@google.com", "url": "https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html"}, {"source": "chrome-cve-admin@google.com", "url": "https://issues.chromium.org/issues/513028160"}], "sourceIdentifier": "chrome-cve-admin@google.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}], "source": "chrome-cve-admin@google.com", "type": "Primary"}]}

{"bugzilla": {"description": "chromium-browser: Insufficient validation of untrusted input in OptimizationGuide", "id": "2482993", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2482993"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.7", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N", "status": "draft"}, "cwe": "CWE-1289", "details": ["An insufficient validation of untrusted input flaw was found in the OptimizationGuide component of the Chromium browser.\nUpstream bug(s):\nhttps://code.google.com/p/chromium/issues/detail?id=513028160"], "name": "CVE-2026-9986", "public_date": "2026-05-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-9986\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-9986\nhttps://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html\nhttps://issues.chromium.org/issues/513028160"], "statement": "Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory.", "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[148.0.7778.216,148.0.7778.216)"}}], "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": "2026-05-29T00:45:30.163308+00:00", "title": "Insufficient Validation in OptimizationGuide Enables UI Spoofing", "updated": "2026-05-29T02:15:16.538433+00:00", "vendors": ["google", "google$PRODUCT$chrome"]}