CVE-2026-28946
published 2026-05-11CVE-2026-28946: A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5, macOS Tahoe 26.5. Processing maliciously crafted web…
PriorityP431medium6.5CVSS 3.1
AVNACLPRNUIRSUCNINAH
EPSS
0.39%
31.9th percentile
A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5, macOS Tahoe 26.5. Processing maliciously crafted web content may lead to an unexpected Safari crash.
Affected
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| apple | macos | < 26.5 | 26.5 |
| apple | macos | >= 26.0 < 26.5 | 26.5 |
| apple | safari | < 26.5 | 26.5 |
| webkitgtk | webkitgtk | — | — |
CVSS provenance
nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
vendor_redhat6.5MEDIUM
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VulDB
Apple macOS up to 26.4 Web use after free (Nessus ID 318327 / WID-SEC-2026-1543)
vuldb·2026-07-02·CVSS 6.5
CVE-2026-28946 [MEDIUM] Apple macOS up to 26.4 Web use after free (Nessus ID 318327 / WID-SEC-2026-1543)
A vulnerability was found in Apple macOS up to 26.4. It has been declared as critical. This vulnerability affects unknown code of the component Web Handler. Such manipulation leads to use after free.
This vulnerability is documented as CVE-2026-28946. The attack can be executed remotely. There is not any exploit available.
It is recommended to upgrade the affected component.
GHSA
GHSA-ch66-7v2f-mvh2: A use-after-free issue was addressed with improved memory management
ghsa_unreviewed·2026-05-11
CVE-2026-28946 [MEDIUM] CWE-416 GHSA-ch66-7v2f-mvh2: 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 macOS Tahoe 26.5. Processing maliciously crafted web content may lead to an unexpected Safari crash.
Red Hat
webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash
vendor_redhat·2026-06-02·CVSS 6.5
CVE-2026-28946 [MEDIUM] CWE-416 webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash
webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash
A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5, macOS Tahoe 26.5. Processing maliciously crafted web content may lead to an unexpected Safari crash.
A flaw was found in WebKitGTK. Processing malicious web content can cause a use-after-free issue due to improper memory management and result in an unexpected process crash.
Statement: To exploit this issue, an attacker needs to trick a user into processing or loading malicious web content. Due to this reason, this flaw has been rated with an important severity.
Additionally, this issue can cause an unexpected process crash but the possibility of remote code execution is not discarded.
Mitig
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-28946 webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash [epel-all]
bugzilla·2026-06-02·CVSS 6.5
CVE-2026-28946 [MEDIUM] CVE-2026-28946 webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash [epel-all]
CVE-2026-28946 webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash [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.
Bugzilla
CVE-2026-28946 webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash [fedora-all]
bugzilla·2026-06-02·CVSS 6.5
CVE-2026-28946 [MEDIUM] CVE-2026-28946 webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash [fedora-all]
CVE-2026-28946 webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash [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.
Bugzilla
CVE-2026-28946 webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash
bugzilla·2026-05-11·CVSS 6.5
CVE-2026-28946 [MEDIUM] CVE-2026-28946 webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash
CVE-2026-28946 webkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash
A use-after-free issue was addressed with improved memory management. This issue is fixed in macOS Tahoe 26.5. Processing maliciously crafted web content may lead to an unexpected Safari crash.
https://support.apple.com/en-us/127115https://support.apple.com/en-us/127121https://access.redhat.com/errata/RHSA-2026:25918https://access.redhat.com/errata/RHSA-2026:25927https://access.redhat.com/errata/RHSA-2026:27728https://access.redhat.com/errata/RHSA-2026:27785https://access.redhat.com/errata/RHSA-2026:27804https://access.redhat.com/errata/RHSA-2026:28114https://access.redhat.com/errata/RHSA-2026:28146https://access.redhat.com/errata/RHSA-2026:28147https://access.redhat.com/errata/RHSA-2026:28148https://access.redhat.com/security/cve/CVE-2026-28946https://bugzilla.redhat.com/show_bug.cgi?id=2471790https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-28946.json
2026-05-11
Published