{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-5869", "assignerOrgId": "ebfee0ef-53dd-4cf3-9e2a-08a5bd7a7e28", "state": "PUBLISHED", "assignerShortName": "Chrome", "dateReserved": "2026-04-08T19:34:34.227Z", "datePublished": "2026-04-08T21:20:43.915Z", "dateUpdated": "2026-04-10T18:40:08.229Z"}, "containers": {"cna": {"affected": [{"vendor": "Google", "product": "Chrome", "versions": [{"version": "147.0.7727.55", "status": "affected", "lessThan": "147.0.7727.55", "versionType": "custom"}]}], "descriptions": [{"lang": "en", "value": "Heap buffer overflow in WebML in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: High)"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "Heap buffer overflow", "cweId": "CWE-122"}]}], "providerMetadata": {"orgId": "ebfee0ef-53dd-4cf3-9e2a-08a5bd7a7e28", "shortName": "Chrome", "dateUpdated": "2026-04-08T21:20:43.915Z"}, "references": [{"url": "https://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop.html"}, {"url": "https://issues.chromium.org/issues/493708165"}]}, "adp": [{"problemTypes": [{"descriptions": [{"type": "CWE", "cweId": "CWE-122", "lang": "en", "description": "CWE-122 Heap-based Buffer Overflow"}]}], "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:N/S:U/C:L/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-04-10T18:39:36.120885Z", "id": "CVE-2026-5869", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"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": "2026-04-10T18:40:08.229Z"}}]}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "Heap buffer overflow in WebML in Google Chrome prior to 147.0.7727.55 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: High)"}], "id": "CVE-2026-5869", "lastModified": "2026-04-10T19:16:27.910", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 2.5, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}, "published": "2026-04-08T22:16:26.470", "references": [{"source": "chrome-cve-admin@google.com", "url": "https://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop.html"}, {"source": "chrome-cve-admin@google.com", "url": "https://issues.chromium.org/issues/493708165"}], "sourceIdentifier": "chrome-cve-admin@google.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-122"}], "source": "chrome-cve-admin@google.com", "type": "Primary"}, {"description": [{"lang": "en", "value": "CWE-122"}], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}]}

{"bugzilla": {"description": "chromium-browser: Heap buffer overflow in WebML", "id": "2456777", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2456777"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "status": "draft"}, "cwe": "CWE-787", "details": ["A heap buffer overflow flaw was found in the WebML component of the Chromium browser.\nUpstream bug(s):\nhttps://code.google.com/p/chromium/issues/detail?id=493708165"], "name": "CVE-2026-5869", "public_date": "2026-04-07T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-5869\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-5869\nhttps://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop.html\nhttps://issues.chromium.org/issues/493708165"], "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": "[0,147.0.7727.55)"}}], "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": "2026-04-08T22:48:18.797129+00:00", "value": {"mitigation_remediation": ["Update Google Chrome to version 147.0.7727.55 or later"], "summary": {"action": "Apply Patch", "impact": "Sensitive Information Disclosure"}, "threat_synthesis": {"affected_systems": "All desktop installations of Google Chrome running a version earlier than 147.0.7727.55 are vulnerable. The issue affects the Chrome browser shipped for Windows, macOS, and Linux platforms.", "description_and_impact": "Google Chrome prior to 147.0.7727.55 contains a heap buffer overflow in the WebML component, classified as CWE\u2011122. A crafted HTML page can trigger the overflow, allowing a remote attacker to read process memory and potentially exfiltrate sensitive data. The vulnerability does not grant arbitrary code execution, but it does break confidentiality by leaking memory contents that may include credentials, secrets, or other confidential information.", "risk_and_exploitability": "Chromium rates the issue as high severity. EPSS data is not available, and the vulnerability is not listed in the CISA KEV catalog. The likely attack vector is a maliciously crafted web page that the user opens, implying that exploitation requires user interaction with a malicious site but can occur without special privileges."}}}}, "created": "2026-04-09T08:17:33.646011+00:00", "title": "Heap Buffer Overwrite in WebML Enables Sensitive Data Leak in Google Chrome", "updated": "2026-04-09T08:26:57.119463+00:00", "vendors": ["google", "google$PRODUCT$chrome"]}