BlackTreeCVE Intelligence
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Full vulnerability report · 2026
CVE-2026-43795High confidence

The issue was addressed with improved memory handling

Apple · Safari

4.3MediumCVSS 3.1
Recommended action
Scheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Mitigation available
Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

1 current
CVE-2026-43795 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitywebkitgtk: Processing maliciously crafted web content may lead to an unexpected Safari crash
27 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • webkitgtk as a component of Red Hat Enterprise Linux 6
  • webkitgtk-devel as a component of Red Hat Enterprise Linux 6
  • webkitgtk-doc as a component of Red Hat Enterprise Linux 6
  • webkitgtk.src as a component of Red Hat Enterprise Linux 6
  • libwebkit2gtk as a component of Red Hat Enterprise Linux 7
  • webkitgtk3 as a component of Red Hat Enterprise Linux 7
  • webkitgtk3-devel as a component of Red Hat Enterprise Linux 7
  • webkitgtk3-doc as a component of Red Hat Enterprise Linux 7
  • webkitgtk3.src as a component of Red Hat Enterprise Linux 7
  • webkitgtk4 as a component of Red Hat Enterprise Linux 7
  • webkitgtk4-devel as a component of Red Hat Enterprise Linux 7
  • webkitgtk4-doc as a component of Red Hat Enterprise Linux 7
Summary
A flaw was found in WebKitGTK. Processing malicious web content can cause an unexpected process crash due to improper memory handling.
Remediation
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.
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2026-60505

No EUVD known-exploited evidence

The issue was addressed with improved memory handling. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2. Processing maliciously crafted web content may lead to an unexpected Safari crash.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
4.3 · CVSS 3.1
Advisory evidence
No linked advisory details stored yet
Recommended actionScheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Mitigation available
01

What, why and how

The issue was addressed with improved memory handling. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2. Processing maliciously crafted web content may lead to an unexpected Safari crash.

What

The issue was addressed with improved memory handling. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2. Processing maliciously crafted web content may lead to an unexpected Safari crash.

Why

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

How

An attacker operating through a network path may attempt exploitation without authentication after a user interaction. If successful, the issue may disrupt the affected service.

What

The issue was addressed with improved memory handling. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2. Processing maliciously crafted web content may lead to an unexpected Safari crash.

Why

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

How

An attacker operating through a network path may attempt exploitation without authentication after a user interaction. If successful, the issue may disrupt the affected service.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
a network path → Improper Restriction of Operations within the Bounds of a Memory Buffer → disrupt the affected service
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
Required interaction required
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-119 ↗

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer. The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UIRequiredUser interaction: Another user must perform an action for exploitation to succeed.SUnchangedScope: The security impact remains within the vulnerable component's authority.CNoneConfidentiality impact: No direct loss is represented by this metric.INoneIntegrity impact: No direct loss is represented by this metric.ALowAvailability impact: A successful attack can cause a limited loss.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedDenial of serviceCWE-119
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2026-60505Official EUVD mapping

The issue was addressed with improved memory handling. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2. Processing maliciously crafted web content may lead to an unexpected Safari crash.

Official EUVD record ↗
BSI · German · WID-SEC-2026-2872Apple Safari, macOS, iOS und iPadOS: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Apple Safari, Apple macOS, Apple iOS und Apple iPadOS ausnutzen, um beliebigen Programmcode auszuführen, Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen, Daten zu manipulieren, Speicherbeschädigungen zu verursachen oder einen Denial-of-Service-Zustand herbeizuführen.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-1038Multiples vulnérabilités dans les produits Apple

d?id=CVE-2026-43742 Référence CVE CVE-2026-43744 https://www.cve.org/CVERecord?id=CVE-2026-43744 Référence CVE CVE-2026-43745 https://www.cve.org/CVERecord?id=CVE-2026-43745 Référence CVE CVE-2026-43754 https://www.cve.org/CVERecord?id=CVE-2026-43754 Référence CVE CVE-2026-43757 https://www.cve.org/CVERecord?id=CVE-2026-43757 Référence CVE CVE-2026-43769 https://www.cve.org/CVERecord?id=CVE-2026-43769 Référence CVE CVE-2026-43776 https://www.cve.org/CVERecord?id=CVE-2026-43776 Référence CVE CVE-2026-43778 https://www.cve.org/CVERecord?id=CVE-2026-43778 Référence CVE CVE-2026-43794 https://www.cve.org/CVERecord?id=CVE-2026-43794 Référence CVE CVE-2026-43795 https://www.cve.org/CVERecord?id=CVE-2026-43795 Référence CVE CVE-2026-43796 https://www.cve.org/CVERecord?id=CVE-2026-43796 Référence CVE CVE-2026-43797 https://www.cve.org/CVERecord?id=CVE-2026-43797 Référence CVE CVE-2026-43799 https://www.cve.org/CVERecord?id=CVE-2026-43799 Référence CVE CVE-2026-43800 https://www.cve.org/CVERecord?id=CVE-2026-43800 Référence CVE CVE-2026-43801 https://www.cve.org/CVERecord?id=CVE-2026-43801 Référence CVE CVE-2026-43802 https://www.cve.org/CVERecord?id=CVE-2026-43802 Référence CVE CVE-2026-43803 https://www.cve.org/CVERecord?id=CVE-2026-43803 Référence CVE CVE-2026-43807 https://www.cve.org/CVERecord?id=

Official advisory ↗
NCSC-NL · Dutch · NCSC-2026-0319Kwetsbaarheden verholpen in Apple iOS en iPadOS

A memory corruption vulnerability causing unexpected Safari crashes from maliciously crafted web content was fixed through improved memory handling and locking in Safari 26.6.1, iOS 18.7.10, iPadOS 18.7.10, and macOS Tahoe 26.6.2.

Official advisory ↗
NCSC-NL · Dutch · NCSC-2026-0317Kwetsbaarheden verholpen in Apple macOS

A memory corruption vulnerability causing unexpected Safari crashes from maliciously crafted web content was fixed through improved memory handling and locking in Safari 26.6.1, iOS 18.7.10, iPadOS 18.7.10, and macOS Tahoe 26.6.2.

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Mitigation available
Affected
  • webkitgtk as a component of Red Hat Enterprise Linux 6
  • webkitgtk-devel as a component of Red Hat Enterprise Linux 6
  • webkitgtk-doc as a component of Red Hat Enterprise Linux 6
  • webkitgtk.src as a component of Red Hat Enterprise Linux 6
  • libwebkit2gtk as a component of Red Hat Enterprise Linux 7
  • webkitgtk3 as a component of Red Hat Enterprise Linux 7
  • webkitgtk3-devel as a component of Red Hat Enterprise Linux 7
  • webkitgtk3-doc as a component of Red Hat Enterprise Linux 7
  • webkitgtk3.src as a component of Red Hat Enterprise Linux 7
  • webkitgtk4 as a component of Red Hat Enterprise Linux 7
  • webkitgtk4-devel as a component of Red Hat Enterprise Linux 7
  • webkitgtk4-doc as a component of Red Hat Enterprise Linux 7
  • webkitgtk4-jsc as a component of Red Hat Enterprise Linux 7
  • webkitgtk4-jsc-devel as a component of Red Hat Enterprise Linux 7
  • webkitgtk4-plugin-process-gtk2 as a component of Red Hat Enterprise Linux 7
  • webkitgtk4.src as a component of Red Hat Enterprise Linux 7
  • webkit2gtk3 as a component of Red Hat Enterprise Linux 8
  • webkit2gtk3-devel as a component of Red Hat Enterprise Linux 8
  • webkit2gtk3-jsc as a component of Red Hat Enterprise Linux 8
  • webkit2gtk3-jsc-devel as a component of Red Hat Enterprise Linux 8
  • webkit2gtk3-plugin-process-gtk2 as a component of Red Hat Enterprise Linux 8
  • webkit2gtk3.src as a component of Red Hat Enterprise Linux 8
  • webkit2gtk3 as a component of Red Hat Enterprise Linux 9
  • webkit2gtk3-devel as a component of Red Hat Enterprise Linux 9
  • webkit2gtk3-jsc as a component of Red Hat Enterprise Linux 9
  • webkit2gtk3-jsc-devel as a component of Red Hat Enterprise Linux 9
  • webkit2gtk3.src as a component of Red Hat Enterprise Linux 9
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
No verified patch reference is present in the current structured sources. Check the vendor advisory before making a change.
Workaround
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.
04

Evidence and provenance

Published 17 Aug 2026 · Last source change 18 Aug 2026, 17:59 UTC · CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer

CVE recordCVE.org · 5.2
CVSS sourceCISA ADP
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-23
European sourceENISA EUVD · EUVD-2026-60505
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCISA ADP
NVD statusNVD enriched

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Affected versionsThe structured affected or fixed version information changed.
    Before
    < 18.7.10; < 26.6.1; < 26.6.2 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    After
    < 26.6.1; < 18.7.10; < 26.6.2 · Fixed: No fixed version is explicitly recorded in the structured CVE data.
    CNA ↗
  2. Vendor guidanceAuthoritative vendor guidance changed from no authoritative guidance recorded to vendor advisory.
    Before
    no authoritative guidance recorded
    After
    vendor advisory
    product-security@apple.com ↗
  3. SeveritySeverity changed from Unknown to Medium.
    Before
    Unknown
    After
    Medium
    CISA ADP ↗
  4. CVSS scoreCVSS score changed from not recorded to 4.3 (CVSS 3.1 · CISA ADP · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L).
    Before
    not recorded
    After
    4.3 (CVSS 3.1 · CISA ADP · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L)
    CISA ADP ↗
  5. Catalogue recordCVE added to the BlackTree catalogue.
    CNA ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
ENISA EUVD · EUVD-2026-60505↗Vendor CSAF · Red Hat Product Security↗CVE authority or vendor reference↗Vendor advisory↗Vendor advisory↗Vendor advisory↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2026-43795 · cve.blacktree.nl