CVE-2026-43731
published 2026-06-29CVE-2026-43731: A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5.2, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5.2 and…
PriorityP349high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
0.40%
33.7th percentile
A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5.2, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6. Processing maliciously crafted web content may lead to memory corruption.
Affected
12 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| apple | ios_and_ipados | < 18.7.10 | 18.7.10 |
| apple | ios_and_ipados | < 26.5.2 | 26.5.2 |
| apple | ipados | < 26.5.2 | 26.5.2 |
| apple | iphone_os | < 26.5.2 | 26.5.2 |
| apple | macos | < 26.5.2 | 26.5.2 |
| apple | macos | >= 26.0 < 26.5.2 | 26.5.2 |
| apple | safari | < 26.5.2 | 26.5.2 |
| apple | tvos | < 26.6 | 26.6 |
| apple | visionos | < 26.6 | 26.6 |
| apple | watchos | < 26.6 | 26.6 |
| ubuntu | webkit2gtk | — | — |
| webkitgtk | webkitgtk | — | — |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
vendor_redhat8.8HIGH
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Ubuntu
WebKitGTK vulnerabilities
vendor_ubuntu·2026-08-31
CVE-2026-43742 WebKitGTK vulnerabilities
Title: WebKitGTK vulnerabilities
Summary: Several security issues were fixed in WebKitGTK.
Several security issues were discovered in the WebKitGTK Web and JavaScript
engines. If a user were tricked into viewing a malicious website, a remote
attacker could exploit a variety of issues related to web browser security,
including cross-site scripting attacks, denial of service attacks, and
arbitrary code execution.
Instructions: This update uses a new upstream release, which includes additional bug
fixes. After a standard system update you need to restart any applications
that use WebKitGTK, such as Epiphany, to make all the necessary changes.
Red Hat
webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption
vendor_redhat·2026-07-10·CVSS 8.8
CVE-2026-43731 [HIGH] CWE-416 webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption
webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption
A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may lead to memory corruption.
A flaw was found in WebKitGTK. Processing maliciously crafted web content can trigger a use-after-free due to improper memory management, leading to memory corruption.
Package: pywebkitgtk (Red Hat Enterprise Linux 6) - Out of support scope
Package: webkitgtk (Red Hat Enterprise Linux 6) - Out of support scope
Package: webkitgtk3 (Red Hat Enterprise Linux 7) - Out of support scope
Package: webkitgtk4 (Red Hat Enterprise Linux 7) - Out of support scope
Package: webkit2gtk3
VulDB
Apple Safari/iOS/iPadOS/macOS up to 26.5.1 Web use after free
vuldb·2026-06-30·CVSS 8.8
CVE-2026-43731 [HIGH] Apple Safari/iOS/iPadOS/macOS up to 26.5.1 Web use after free
A vulnerability described as critical has been identified in Apple Safari, iOS, iPadOS and macOS up to 26.5.1. This affects an unknown part of the component Web Handler. Such manipulation leads to use after free.
This vulnerability is referenced as CVE-2026-43731. It is possible to launch the attack remotely. No exploit is available.
Upgrading the affected component is recommended.
GHSA
A use-after-free issue was addressed with improved memory management.
ghsa_unreviewed·2026-06-29
CVE-2026-43731 [HIGH] CWE-416 A use-after-free issue was addressed with improved memory management.
A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5.2, iOS 26.5.2 and iPadOS 26.5.2, macOS Tahoe 26.5.2. Processing maliciously crafted web content may lead to memory corruption.
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-43731 webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption [fedora-all]
bugzilla·2026-08-31·CVSS 8.8
CVE-2026-43731 [HIGH] CVE-2026-43731 webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption [fedora-all]
CVE-2026-43731 webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
A use-after-free issue was addressed with improved memory management.
Impact: maliciously crafted web content may lead to memory corruption
Advisory: https://webkitgtk.org/security/WSA-2026-0004.html
WebKit Bug: https://bugs.webkit.org/show_bug.cgi?id=314115
Bugzilla
CVE-2026-43731 webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption [epel-all]
bugzilla·2026-07-16·CVSS 8.8
CVE-2026-43731 [HIGH] CVE-2026-43731 webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption [epel-all]
CVE-2026-43731 webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption [epel-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
A use-after-free issue was addressed with improved memory management.
Impact: maliciously crafted web content may lead to memory corruption
Advisory: https://webkitgtk.org/security/WSA-2026-0004.html
WebKit Bug: https://bugs.webkit.org/show_bug.cgi?id=314115
Bugzilla
CVE-2026-43731 webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption
bugzilla·2026-07-14·CVSS 8.8
CVE-2026-43731 [HIGH] CVE-2026-43731 webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption
CVE-2026-43731 webkitgtk: webkitgtk: Maliciously crafted web content may lead to memory corruption
A use-after-free issue was addressed with improved memory management.
Impact: maliciously crafted web content may lead to memory corruption
Advisory: https://webkitgtk.org/security/WSA-2026-0004.html
WebKit Bug: https://bugs.webkit.org/show_bug.cgi?id=314115
Sans Isc
Apple Patches iOS and macOS, (Mon, Aug 17th)
blogs_sans_isc·2026-08-17·CVSS 5.5
CVE-2026-28958 [MEDIUM] Apple Patches iOS and macOS, (Mon, Aug 17th)
Apple Patches iOS and macOS
Published: 2026-08-17. Last Updated: 2026-08-17 20:26:39 UTC
by Johannes Ullrich (Version: 1)
0 comment(s)
Apple today released updates for iOS/iPadOS (26 and 18) and macOS 26. This update fixes 108 vulnerabilities and comes about two weeks after the much smaller macOS update that addressed the single screen-sharing vulnerability. This vulnerability did not affect iOS/iPadOS.
None of the vulnerabilities has been exploited so far. There are a few WebKit vulnerabilities, but no standalone Safari patch for older operating systems. 87 of the vulnerabilities affect only iOS 18, making this more of an iOS 18 release than one for the newer operating systems. Only six vulnerabilities affect all three OSs released today. All 6 vulnerabilities affect WebKit.
Apple's
2026-06-29
Published