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CVE-2026-43804· NVD / CVE Program· CNA apple

This issue was addressed through improved state management.

This issue was addressed through improved state management. This issue is fixed in Safari 26.6, iOS 26.6 and iPadOS 26.6, macOS Tahoe 26.6, visionOS 26.6. Visiting a website may lead to an app denial-of-service.

MediumCVSS 6.5 · v3.1—No exploit Fix available

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Published
Jul 27, 2026
Updated
Jul 28, 2026
EPSS
0.4% · 35th percentile
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Report tools

JSON

Action score

26

Monitor

Low priority for now.

CVSS
26 / 40 · 6.5 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.4%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

Affected systems

VendorProduct
applesafari
appleipados
appleiphone os
applemacos
applevisionos

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • apple ipadosbefore 26.6
  • apple iphone osbefore 26.6
  • apple macos26.0 and later · before 26.6
  • apple safaribefore 26.6
  • apple visionosbefore 26.6

Versions reported by the vendor

Affected version ranges reported by the assigning authority (apple). Independent of NVD's CPE analysis and usually ahead of it.

  • Apple iOS and iPadOS

    • before 26.6affected

  • Apple macOS

    • before 26.6affected

  • Apple Safari

    • before 26.6affected

  • Apple visionOS

    • before 26.6affected

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
AlmaLinux:9webkit2gtk3before 2.54.0-1.el9_82.54.0-1.el9_8
AlmaLinux:9webkit2gtk3-develbefore 2.54.0-1.el9_82.54.0-1.el9_8
AlmaLinux:9webkit2gtk3-jscbefore 2.54.0-1.el9_82.54.0-1.el9_8
AlmaLinux:9webkit2gtk3-jsc-develbefore 2.54.0-1.el9_82.54.0-1.el9_8
Debian:12webkit2gtkall versions—
Debian:12wpewebkitall versions—
Debian:13webkit2gtkbefore 2.52.6-1~deb13u12.52.6-1~deb13u1
Debian:14webkit2gtkbefore 2.52.6-12.52.6-1
Debian:14wpewebkitbefore 2.52.6-12.52.6-1
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSwebkit2gtk3before 2.52.6-150400.4.149.22.52.6-150400.4.149.2
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSwebkit2gtk3-soup2before 2.52.6-150400.4.149.22.52.6-150400.4.149.2
SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSwebkit2gtk4before 2.52.6-150400.4.149.22.52.6-150400.4.149.2
SUSE:Linux Enterprise Module for Basesystem 15 SP7webkit2gtk3-soup2before 2.52.6-150600.12.74.12.52.6-150600.12.74.1
SUSE:Linux Enterprise Module for Basesystem 15 SP7webkit2gtk4before 2.52.6-150600.12.74.12.52.6-150600.12.74.1
SUSE:Linux Enterprise Module for Desktop Applications 15 SP7webkit2gtk3before 2.52.6-150600.12.74.12.52.6-150600.12.74.1

Same product

apple: all records

Other highest-scoring records for the same primary product.

  • CVE-2023-28205A use after free issue was addressed with improved memory management.KEV
    73This week
  • CVE-2023-32439A type confusion issue was addressed with improved checks.KEV
    72This week
  • CVE-2023-32435A memory corruption issue was addressed with improved state management.KEV
    72This week
  • CVE-2025-24201An out-of-bounds write issue was addressed with improved checks to prevent unauthorized actions.KEV
    71This week
  • CVE-2023-37450The issue was addressed with improved checks.KEV
    71This week
  • CVE-2022-22620A use after free issue was addressed with improved memory management.KEV
    70This week

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
almalinux:webkit2gtk32.54.0-1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:webkit2gtk3-devel2.54.0-1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:webkit2gtk3-jsc2.54.0-1.el9_8 · AlmaLinux:9Package registry (OSV)
almalinux:webkit2gtk3-jsc-devel2.54.0-1.el9_8 · AlmaLinux:9Package registry (OSV)
debian:webkit2gtk2.52.6-1~deb13u1 · Debian:13Package registry (OSV)
debian:wpewebkit2.52.6-1 · Debian:14Package registry (OSV)
suse:webkit2gtk32.52.6-150400.4.149.2 · SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSPackage registry (OSV)
suse:webkit2gtk3-soup22.52.6-150400.4.149.2 · SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSPackage registry (OSV)
suse:webkit2gtk42.52.6-150400.4.149.2 · SUSE:Linux Enterprise High Performance Computing 15 SP4-ESPOSPackage registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2025-24264483 days apartThe issue was addressed with improved memory handling.
    39Monitor
  • CVE-2026-20652166 days apartThe issue was addressed with improved memory handling.
    30Monitor
  • CVE-2024-54658532 days apartThe issue was addressed with improved memory handling.
    26Monitor
  • CVE-2024-44192504 days apartThe issue was addressed with improved checks.
    22Monitor
  • CVE-2026-20676166 days apartThis issue was addressed through improved state management.
    21Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
none
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Unchanged
Confidentiality impact
None
Integrity impact
None
Availability impact
High

Weakness class (CWE)

CWE-400 · Uncontrolled Resource Consumption

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

nvd-secondary

Root cause

Code that parses nested structures sets no depth or size limit. A small input can turn into a disproportionate processing load.

The bug in code

The whole CWE-400 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
function expand(node) {  return node.children.map(expand);}

Fixed

ts
const MAX_DEPTH = 32;function expand(node, depth = 0) {  if (depth > MAX_DEPTH) throw new Error("too deep");  return node.children.map((c) => expand(c, depth + 1));}

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records