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{"bugzilla": {"description": "webkitgtk: A website may be able to track users through Safari web extensions", "id": "2448794", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2448794"}, "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-201", "details": ["This issue was addressed through improved state management. This issue is fixed in iOS 26.3 and iPadOS 26.3, Safari 26.3, macOS Tahoe 26.3, visionOS 26.3. A website may be able to track users through Safari web extensions.", "A flaw was found in WebKitGTK. A malicious website can track users through web extensions due to improper state management."], "mitigation": {"lang": "en:us", "value": "Do not visit untrusted websites. Also, do not process 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-2026-20676", "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": "2026-03-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-20676\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-20676\nhttps://webkitgtk.org/security/WSA-2026-0001.html"], "statement": "To exploit this flaw, an attacker needs to trick a user into visiting a malicious website. Due to this reason, this flaw has been rated with a moderate severity.", "threat_severity": "Moderate"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,26.3)"}}], "product": "ios_and_ipados", "vendor": "apple"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,26.3)"}}], "product": "macos", "vendor": "apple"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,26.3)"}}], "product": "safari", "vendor": "apple"}, {"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,26.3)"}}], "product": "visionos", "vendor": "apple"}], "analysis": {"en": {"generated_at": "2026-04-16T17:14:00.151670+00:00", "value": {"mitigation_remediation": ["Apply the 26.3 update for Safari, iOS, iPadOS, macOS, and visionOS to fix the state\u2011management issue.", "Disable or remove any Safari web extensions that are not essential or that come from untrusted developers.", "Configure Safari\u2019s privacy settings to reduce third\u2011party tracking and cookie usage."], "summary": {"action": "Update", "impact": "User privacy compromise through tracking via Safari web extensions"}, "threat_synthesis": {"affected_systems": "Apple products running Safari, iOS, iPadOS, macOS, or visionOS before the 26.3 update are vulnerable. Versions earlier than 26.3 lack the state\u2011management fix delivered in the latest releases of each platform.", "description_and_impact": "The flaw arises from insufficient state handling in Safari web extensions, allowing a malicious website to collect usage data from users running the browser. The weakness is an information exposure vulnerability (CWE\u2011201) combined with uncontrolled resource consumption (CWE\u2011400), allowing a persistent state to be populated and reused across sessions. A compromised state can persist, enabling continuous tracking without the user\u2019s consent and undermining privacy by enabling profiling of individual users.", "risk_and_exploitability": "The vulnerability has a low severity rating based on its CVSS score of 4.3, and a very low likelihood of exploitation. It is not listed in the catalog of known exploited vulnerabilities. Attackers would need a user to visit a site that injects a web extension with weakened state handling, making the attack opportunistic rather than targeted. Because the issue is limited to tracking rather than code execution, applying the available patch effectively eliminates the risk."}}}}, "created": "2026-02-12T09:02:46.235508+00:00", "updated": "2026-04-16T17:15:17.995831+00:00", "vendors": ["apple", "apple$PRODUCT$ios_and_ipados", "apple$PRODUCT$macos", "apple$PRODUCT$safari", "apple$PRODUCT$visionos"]}