{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-4458", "assignerOrgId": "ebfee0ef-53dd-4cf3-9e2a-08a5bd7a7e28", "state": "PUBLISHED", "assignerShortName": "Chrome", "dateReserved": "2026-03-19T20:23:53.653Z", "datePublished": "2026-03-20T01:34:55.397Z", "dateUpdated": "2026-03-21T04:01:10.569Z"}, "containers": {"cna": {"affected": [{"vendor": "Google", "product": "Chrome", "versions": [{"version": "146.0.7680.153", "status": "affected", "lessThan": "146.0.7680.153", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "Use after free in Extensions in Google Chrome prior to 146.0.7680.153 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted Chrome Extension. (Chromium security severity: High)"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Use after free", "cweId": "CWE-416"}]}], "providerMetadata": {"orgId": "ebfee0ef-53dd-4cf3-9e2a-08a5bd7a7e28", "shortName": "Chrome", "dateUpdated": "2026-03-20T01:34:55.397Z"}, "references": [{"url": "https://chromereleases.googleblog.com/2026/03/stable-channel-update-for-desktop_18.html"}, {"url": "https://issues.chromium.org/issues/489619753"}]}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-03-20T00:00:00+00:00", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3", "id": "CVE-2026-4458"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-03-21T04:01:10.569Z"}}]}}

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{"bugzilla": {"description": "chromium-browser: Use after free in Extensions", "id": "2449395", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2449395"}, "csaw": false, "cvss3": {"cvss3_base_score": "9.6", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["An use after free flaw was found in the Extensions component of the Chromium browser.\nUpstream bug(s):\nhttps://code.google.com/p/chromium/issues/detail?id=489619753"], "name": "CVE-2026-4458", "public_date": "2026-03-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-4458\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-4458\nhttps://chromereleases.googleblog.com/2026/03/stable-channel-update-for-desktop_18.html\nhttps://issues.chromium.org/issues/489619753"], "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": "[146.0.7680.153,146.0.7680.153)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Chrome", "source": "cna", "vendor": "Google"}, "product": "chrome", "vendor": "google"}], "analysis": {"en": {"generated_at": "2026-03-20T20:05:42.242674+00:00", "value": {"mitigation_remediation": ["Update Google Chrome to version 146.0.7680.153 or later"], "summary": {"action": "Immediate Patch", "impact": "Remote Code Execution"}, "threat_synthesis": {"affected_systems": "Google Chrome versions earlier than 146.0.7680.153 are vulnerable. The issue affects all operating systems that Chrome runs on\u2014including macOS, Linux, and Windows\u2014as indicated by the corresponding CPE entries.", "description_and_impact": "A use\u2011after\u2011free defect in Chrome\u2019s extension handling can corrupt heap memory when a user installs a malicious extension. The flaw, identified by CWE\u2011416 and CWE\u2011825, may allow an attacker to manipulate memory structures and potentially execute arbitrary code on the victim\u2019s machine.", "risk_and_exploitability": "The vulnerability receives a CVSS score of 8.8, placing it in the high\u2011severity range. An EPSS score below 1\u202f% indicates a low but non\u2011zero likelihood of exploitation. The flaw is not listed in the CISA KEV catalog. The likely attack path requires the user to install a malicious extension, after which the use\u2011after\u2011free condition can be triggered to corrupt heap memory and facilitate code execution."}}}}, "created": "2026-03-20T08:53:19.471816+00:00", "updated": "2026-03-25T14:09:47.606596+00:00", "vendors": ["google", "google$PRODUCT$chrome"]}