CVE-2026-20644

WebKitGTK is the port of the portable web rendering engine WebKit to the GTK platform.

Security Fix(es):

• webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2025-43213)
• webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2025-43214)
• webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash (CVE-2025-43457)
• webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2025-43511)
• webkitgtk: Processing maliciously crafted web content may disclose internal states of the app (CVE-2025-46299)
• webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2026-20608)
• webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2026-20635)
• webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2026-20636)
• webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2026-20644)
• webkitgtk: A remote attacker may be able to cause a denial-of-service (CVE-2026-20652)
• webkitgtk: A website may be able to track users through Safari web extensions (CVE-2026-20676)
• webkitgtk: Processing maliciously crafted web content may bypass Same Origin Policy (CVE-2026-20643)
• webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2026-20664)
• webkitgtk: Processing maliciously crafted web content may prevent Content Security Policy from being enforced (CVE-2026-20665)
• webkitgtk: A maliciously crafted webpage may be able to fingerprint the user (CVE-2026-20691)
• webkitgtk: Processing maliciously crafted web content may lead to an unexpected process crash (CVE-2026-28857)
• webkitgtk: A malicious website may be able to process restricted web content outside the sandbox (CVE-2026-28859)
• webkitgtk: Visiting a maliciously crafted website may lead to a cross-site scripting attack (CVE-2026-28871)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.