High severity8.8NVD Advisory· Published May 11, 2026· Updated Aug 17, 2026

CVE-2026-28947

Description

A use-after-free issue was addressed with improved memory management. This issue is fixed in Safari 26.5, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5 and iPadOS 26.5, macOS Tahoe 26.5, tvOS 26.5, visionOS 26.5, watchOS 26.5. Processing maliciously crafted web content may lead to an unexpected Safari crash.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected products

osv-coords36 versions
pkg:rpm/opensuse/webkit2gtk4&distro=openSUSE%20Leap%2016.0 pkg:rpm/almalinux/webkit2gtk3 pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Server%2016.0 pkg:rpm/suse/webkit2gtk4&distro=SUSE%20Linux%20Enterprise%20Server%2016.0 pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0 pkg:rpm/suse/webkit2gtk4&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20applications%2016.0 pkg:rpm/suse/webkit2gtk3-soup2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOS pkg:rpm/suse/webkit2gtk4&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOS pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSS pkg:rpm/suse/webkit2gtk3-soup2&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSS pkg:rpm/suse/webkit2gtk4&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP4-LTSS pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSS pkg:rpm/suse/webkit2gtk3-soup2&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSS pkg:rpm/almalinux/webkit2gtk3-jsc pkg:rpm/almalinux/webkit2gtk3-devel pkg:rpm/opensuse/webkit2gtk3&distro=openSUSE%20Leap%2016.0 pkg:rpm/opensuse/webkit2gtk3-soup2&distro=openSUSE%20Leap%2016.0 pkg:rpm/suse/webkit2gtk3-soup2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP6 pkg:rpm/suse/webkit2gtk4&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP6 pkg:rpm/suse/webkit2gtk4&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP5-LTSS pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5 pkg:rpm/suse/webkit2gtk3-soup2&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5 pkg:rpm/suse/webkit2gtk4&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP5 pkg:rpm/suse/webkit2gtk3-soup2&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP6-LTSS pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP6 pkg:rpm/suse/webkit2gtk3-soup2&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7 pkg:rpm/suse/webkit2gtk4&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP7 pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Desktop%20Applications%2015%20SP7 pkg:rpm/suse/webkit2gtk4&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Development%20Tools%2015%20SP7 pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP6-LTSS pkg:rpm/suse/webkit2gtk4&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP6-LTSS pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOS pkg:rpm/suse/webkit2gtk3-soup2&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOS pkg:rpm/suse/webkit2gtk4&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP4-ESPOS pkg:rpm/suse/webkit2gtk3&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP5-ESPOS pkg:rpm/almalinux/webkit2gtk3-jsc-devel
< 2.52.4-160000.1.1+ 35 more
- (no CPE)range: < 2.52.4-160000.1.1
- (no CPE)range: < 2.52.4-1.el8_10
- (no CPE)range: < 2.52.4-160000.1.1
- (no CPE)range: < 2.52.4-160000.1.1
- (no CPE)range: < 2.52.4-160000.1.1
- (no CPE)range: < 2.52.4-160000.1.1
- (no CPE)range: < 2.52.4-150400.4.143.1
- (no CPE)range: < 2.52.4-150400.4.143.1
- (no CPE)range: < 2.52.4-150400.4.143.1
- (no CPE)range: < 2.52.4-150400.4.143.1
- (no CPE)range: < 2.52.4-150400.4.143.1
- (no CPE)range: < 2.52.4-150400.4.143.1
- (no CPE)range: < 2.52.4-150400.4.143.1
- (no CPE)range: < 2.52.4-1.el8_10
- (no CPE)range: < 2.52.4-1.el8_10
- (no CPE)range: < 2.52.4-160000.1.1
- (no CPE)range: < 2.52.4-160000.1.1
- (no CPE)range: < 2.52.4-150600.12.68.1
- (no CPE)range: < 2.52.4-150600.12.68.1
- (no CPE)range: < 2.52.4-150400.4.143.1
- (no CPE)range: < 2.52.4-150400.4.143.1
- (no CPE)range: < 2.52.4-150400.4.143.1
- (no CPE)range: < 2.52.4-150400.4.143.1
- (no CPE)range: < 2.52.4-150600.12.68.1
- (no CPE)range: < 2.52.4-150600.12.68.1
- (no CPE)range: < 2.52.4-150600.12.68.1
- (no CPE)range: < 2.52.4-150600.12.68.1
- (no CPE)range: < 2.52.4-150600.12.68.1
- (no CPE)range: < 2.52.4-150600.12.68.1
- (no CPE)range: < 2.52.4-150600.12.68.1
- (no CPE)range: < 2.52.4-150600.12.68.1
- (no CPE)range: < 2.52.4-150400.4.143.1
- (no CPE)range: < 2.52.4-150400.4.143.1
- (no CPE)range: < 2.52.4-150400.4.143.1
- (no CPE)range: < 2.52.4-150400.4.143.1
- (no CPE)range: < 2.52.4-1.el8_10
Apple Inc./Safarillm-fuzzy
Range: 26.5
Apple Inc./iOSllm-fuzzy
Range: 18.7.10, 26.5
Apple Inc./Ipadosllm-fuzzy2 versions
18.7.10, 26.5+ 1 more
- (no CPE)range: 18.7.10, 26.5
- cpe:2.3:o:apple:ipados:*:*:*:*:*:*:*:*range: <26.5
Apple Inc./macOS Tahoellm-fuzzy
Range: 26.5
Apple Inc./Visionosllm-fuzzy2 versions
26.5+ 1 more
- (no CPE)range: 26.5
- cpe:2.3:o:apple:visionos:*:*:*:*:*:*:*:*range: <26.5
Apple Inc./watchOSllm-fuzzy2 versions
26.5+ 1 more
- (no CPE)range: 26.5
- cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:*range: <26.5
Apple Inc./tvOSllm-fuzzy2 versions
26.5+ 1 more
- (no CPE)range: 26.5
- cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:*range: <26.5
Apple Inc./Iphone OS
cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:*
Range: <26.5
Apple Inc./macOS
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
Range: >=26.0,<26.5

Patches

Vulnerability mechanics

References

support.apple.com/en-us/127110nvdRelease NotesVendor Advisory
support.apple.com/en-us/127115nvdRelease NotesVendor Advisory
support.apple.com/en-us/127118nvdRelease NotesVendor Advisory
support.apple.com/en-us/127119nvdRelease NotesVendor Advisory
support.apple.com/en-us/127120nvdRelease NotesVendor Advisory
access.redhat.com/errata/RHSA-2026:25918nvd
access.redhat.com/errata/RHSA-2026:25927nvd
access.redhat.com/errata/RHSA-2026:27728nvd
access.redhat.com/errata/RHSA-2026:27785nvd
access.redhat.com/errata/RHSA-2026:27804nvd
access.redhat.com/errata/RHSA-2026:28114nvd
access.redhat.com/errata/RHSA-2026:28146nvd
access.redhat.com/errata/RHSA-2026:28147nvd
access.redhat.com/errata/RHSA-2026:28148nvd
access.redhat.com/security/cve/CVE-2026-28947nvd
bugzilla.redhat.com/show_bug.cginvd
security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-28947.jsonnvd
support.apple.com/en-us/127121nvd
support.apple.com/en-us/148287nvd

News mentions

Apple Patches Everything, (Mon, May 11th)
SANS Internet Storm Center · May 11, 2026

cvss	0.572
epss	0.000
exploit	0.000
kev	0.000
patch	0.000
ransomware	0.000