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{"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": "2026-04-14T14:37:50.081323+00:00", "value": {"mitigation_remediation": ["Update Google Chrome to the latest stable release (147.0.7727.55 or newer).", "If an immediate update is not possible, disable the WebML feature through Chrome policies or command\u2011line flags to prevent the code path from executing."], "summary": {"action": "Patch Now", "impact": "Data Disclosure"}, "threat_synthesis": {"affected_systems": "The flaw affects Google Chrome on all supported operating systems before the 147.0.7727.55 release. This includes Windows, macOS, Linux, and potentially Chrome for embedded devices that use the same code base. Users on earlier browser versions should upgrade to any release newer than 147.0.7727.55.", "description_and_impact": "A heap buffer overflow in the WebML component of Google Chrome allows a remote attacker to read memory contents when a specially crafted HTML page is loaded. The vulnerability could expose sensitive information stored in the browser process, leading to confidentiality compromise. It is classified as a high severity issue by Chromium security, reflecting the seriousness of the potential data exposure.", "risk_and_exploitability": "The CVSS score is 4.3, indicating a moderate risk level, while the EPSS score of less than 1% suggests a low probability of exploitation. The vulnerability is not listed in the CISA KEV catalog, further indicating limited known exploitation. The likely attack vector is a remote attacker delivering a malicious HTML page that triggers the overflow via WebML. No local privileges or additional access are required, but an active network connection to the user\u2019s browser is necessary."}}}}, "created": "2026-04-09T08:17:33.646011+00:00", "updated": "2026-04-14T16:37:59.595747+00:00", "vendors": ["google", "google$PRODUCT$chrome"]}