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Vulnerability · Published Jul 27, 2026 · Assigned by apple

CVE-2026-43804

Medium 6.5

In plain English

A medium-severity uncontrolled resource consumption in iOS and iPadOS from Apple. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 38% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.4%top 62.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12webkit2gtkno fix listedDEBIAN-CVE-2026-43804
Debian:13webkit2gtk2.52.6-1~deb13u1DEBIAN-CVE-2026-43804
Debian:14webkit2gtk2.52.6-1DEBIAN-CVE-2026-43804
Debian:12wpewebkitno fix listedDEBIAN-CVE-2026-43804
Debian:13wpewebkitno fix listedDEBIAN-CVE-2026-43804
Debian:14wpewebkit2.52.6-1DEBIAN-CVE-2026-43804
Ubuntu:22.04:LTSqtwebkit-opensource-srcno fix listedUBUNTU-CVE-2026-43804
Ubuntu:24.04:LTSqtwebkit-opensource-srcno fix listedUBUNTU-CVE-2026-43804
Ubuntu:22.04:LTSwebkit2gtkno fix listedUBUNTU-CVE-2026-43804
Ubuntu:24.04:LTSwebkit2gtk2.52.6-0ubuntu0.24.04.1USN-8703-1
Ubuntu:24.04:LTSwebkit2gtk2.52.6-0ubuntu0.24.04.1UBUNTU-CVE-2026-43804
Ubuntu:26.04:LTSwebkit2gtk2.52.6-0ubuntu0.26.04.1USN-8703-1
Ubuntu:26.04:LTSwebkit2gtk2.52.6-0ubuntu0.26.04.1UBUNTU-CVE-2026-43804
Ubuntu:22.04:LTSwpewebkitno fix listedUBUNTU-CVE-2026-43804

Affected products (as reported)

VendorProductVersions
Apple Safari 0 – before 26.6
Apple iOS and iPadOS 0 – before 26.6
Apple macOS 0 – before 26.6
Apple visionOS 0 – before 26.6

Weakness: CWE-400 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References