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{"bugzilla": {"description": "webkitgtk: A malicious website may be able to process restricted web content outside the sandbox", "id": "2453006", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2453006"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.8", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-120", "details": ["The issue was addressed with improved memory handling. This issue is fixed in Safari 26.4, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4, tvOS 26.4, visionOS 26.4, watchOS 26.4. A malicious website may be able to process restricted web content outside the sandbox.", "A flaw was found in WebKitGTK. A maliciously crafted web page may be able to process restricted web content outside the sandbox due to improper memory handling."], "mitigation": {"lang": "en:us", "value": "Do not visit untrusted web pages or load untrusted web content with WebKitGTK.\nIn Red Hat Enterprise Linux 7, the following packages require WebKitGTK4: evolution-data-server, glade, gnome-boxes, gnome-initial-setup, gnome-online-accounts, gnome-shell, shotwell, sushi and yelp.\nThis vulnerability can only be exploited when these packages are installed in the system and being used via a graphical interface to process untrusted web content, via GNOME for example. In gnome-shell, the vulnerability can be exploited by an attacker from the local network without user interaction.\nTo mitigate this vulnerability, consider removing these packages. Note that some of these packages are required by GNOME, removing them will also remove GNOME and other packages, breaking functionality. However, the server can still be used via the terminal interface.\nAdditionally, WebKitGTK3 is not required by any package. Therefore, it can be removed without consequences or break of functionality."}, "name": "CVE-2026-28859", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "webkitgtk", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "webkitgtk3", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Affected", "package_name": "webkitgtk4", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Affected", "package_name": "webkit2gtk3", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "webkit2gtk3", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2026-03-28T20:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-28859\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-28859\nhttps://webkitgtk.org/security/WSA-2026-0002.html"], "statement": "To exploit this flaw, an attacker needs to trick a user into visiting a maliciously crafted web page. Due to this reason, this flaw has been rated with an important severity.", "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,26.4)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "iOS and iPadOS", "source": "cna", "vendor": "Apple"}, "product": "ios_and_ipados", "vendor": "apple"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,26.4)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "macOS", "source": "cna", "vendor": "Apple"}, "product": "macos", "vendor": "apple"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,26.4)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Safari", "source": "cna", "vendor": "Apple"}, "product": "safari", "vendor": "apple"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,26.4)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "tvOS", "source": "cna", "vendor": "Apple"}, "product": "tvos", "vendor": "apple"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,26.4)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "visionOS", "source": "cna", "vendor": "Apple"}, "product": "visionos", "vendor": "apple"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,26.4)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "watchOS", "source": "cna", "vendor": "Apple"}, "product": "watchos", "vendor": "apple"}], "analysis": {"en": {"generated_at": "2026-03-31T06:07:33.793288+00:00", "value": {"mitigation_remediation": ["Apply the latest Apple software updates: Safari 26.4, iOS\u00a026.4, iPadOS\u00a026.4, macOS\u00a026.4, tvOS\u00a026.4, visionOS\u00a026.4 and watchOS\u00a026.4", "Verify the current OS and Safari versions to confirm that the 26.4 releases are installed", "If an update cannot be applied immediately, restrict browsing to trusted sites until the patch is installed"], "summary": {"action": "Apply Patch", "impact": "Sandbox Escape"}, "threat_synthesis": {"affected_systems": "Apple Safari on macOS, iOS, iPadOS, tvOS, visionOS and watchOS is affected whenever the software version is older than the 26.4 releases. The fix is delivered in Safari 26.4, iOS 26.4, iPadOS 26.4, macOS 26.4, tvOS 26.4, visionOS 26.4 and watchOS 26.4.", "description_and_impact": "The flaw is a memory handling error that lets a malicious website process data that should be confined to the browser sandbox. The vulnerability is rooted in several classic memory errors such as buffer overreads, use\u2011after\u2011free, and buffer overflows, all of which are reflected in the assigned CWEs. If triggered, an attacker could read or alter content that is normally protected, enabling the site to access restricted information or influence sandboxed operations.", "risk_and_exploitability": "The CVSS score of 4.3 places this vulnerability in the low severity range, and the EPSS score of less than 1\u202f% indicates that practical exploitation is unlikely at present. It is not listed in the CISA Known Exploited Vulnerabilities catalog. The attack vector is inferred to be remote, originating from a specially crafted web page that a user visits in Safari, exploiting the memory handling flaw to escape the sandbox. No active exploits or publicly available proof\u2011of\u2011concept code have been reported."}}}}, "created": "2026-03-25T11:36:23.489575+00:00", "updated": "2026-03-31T20:09:15.355749+00:00", "vendors": ["apple", "apple$PRODUCT$ios_and_ipados", "apple$PRODUCT$macos", "apple$PRODUCT$safari", "apple$PRODUCT$tvos", "apple$PRODUCT$visionos", "apple$PRODUCT$watchos"]}