webkitgtk: Processing maliciously crafted web content may lead to an unexpected process termination
Published Sep 14, 2026
8.8
HIGHCVSS 3.1
EPSS 0.37%
Description
A logic issue was addressed with improved state management. This issue is fixed in Safari 27, iOS 27 and iPadOS 27, macOS Golden Gate 27, tvOS 27, visionOS 27, watchOS 27. Processing maliciously crafted web content may lead to an unexpected process termination.
Affected products
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- Version 0StatusaffectedConstraints<27
- Version
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- Version 0StatusaffectedConstraints<27
- Version
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- Version 0StatusaffectedConstraints<27
- Version
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- Version 0StatusaffectedConstraints<27
- Version
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- Version 0StatusaffectedConstraints<27
- Version
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- Version 0StatusaffectedConstraints<27
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Apple | Safari | n/a |
| ||||||
| Apple | iOS and iPadOS | n/a |
| ||||||
| Apple | macOS | n/a |
| ||||||
| Apple | tvOS | n/a |
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| Apple | visionOS | n/a |
| ||||||
| Apple | watchOS | n/a |
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No data.
Red Hat Enterprise Linux 9
webkit2gtk3-0:2.54.0-1.el9_8
Fixed · RHSA-2026:69098
Red Hat Enterprise Linux 6
webkitgtk
Affected
Red Hat Enterprise Linux 7
webkitgtk3
Affected
Red Hat Enterprise Linux 7
webkitgtk4
Affected
Red Hat Enterprise Linux 8
webkit2gtk3
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 9 | webkit2gtk3-0:2.54.0-1.el9_8 | Fixed | RHSA-2026:69098 |
| Red Hat Enterprise Linux 6 | webkitgtk | Affected | n/a |
| Red Hat Enterprise Linux 7 | webkitgtk3 | Affected | n/a |
| Red Hat Enterprise Linux 7 | webkitgtk4 | Affected | n/a |
| Red Hat Enterprise Linux 8 | webkit2gtk3 | Affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
To exploit this vulnerability, 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 termination but the possibility of remote code execution is not discarded.
Red Hat mitigation
Do not process or load untrusted web content with WebKitGTK. In 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. This 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. To 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. Additionally, WebKitGTK3 is not required by any package. Therefore, it can be removed without consequences or break of functionality.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
1 other source (Red Hat) ▾
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Sep 16, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
Sep–Oct 2026- EPSS v5
Percentile over time
- EPSS v5
Table of values (2 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.37% (0.00371) | 28.61th | v5 (v2026.06.15) |
| Sep 15, 2026 | 0.14% (0.00139) | 3.58th | v5 (v2026.06.15) |
References (10)
- https://access.redhat.com/security/cve/CVE-2026-84635 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2535531 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2026-84635
- https://support.apple.com/en-us/149034 Vendor Advisory
- https://support.apple.com/en-us/149035 Vendor Advisory
- https://support.apple.com/en-us/149036 Vendor Advisory
- https://support.apple.com/en-us/149037 Vendor Advisory
- https://support.apple.com/en-us/149038 Vendor Advisory
- https://support.apple.com/en-us/149039 Vendor Advisory
- https://www.cve.org/CVERecord?id=CVE-2026-84635
| Link | Providers | Tags |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2026-84635 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2535531 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2026-84635 | ||
| https://support.apple.com/en-us/149034 | Vendor Advisory | |
| https://support.apple.com/en-us/149035 | Vendor Advisory | |
| https://support.apple.com/en-us/149036 | Vendor Advisory | |
| https://support.apple.com/en-us/149037 | Vendor Advisory | |
| https://support.apple.com/en-us/149038 | Vendor Advisory | |
| https://support.apple.com/en-us/149039 | Vendor Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2026-84635 |
Change history (0)
No recorded changes yet.