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Vulnerability · Published Aug 25, 2026 · Assigned by apple

CVE-2026-43670

High 8.8

In plain English

A high-severity security flaw 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 0.2% (higher than 13% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.8High
Exploit odds (30 days)0.2%top 86.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

A Content Security Policy bypass was addressed with improved enforcement in AudioWorklet contexts. This issue is fixed in Safari 26.5, iOS 18.7.9 and iPadOS 18.7.9, iOS 26.5 and iPadOS 26.5, macOS Tahoe 26.5. Processing maliciously crafted web content may bypass Content Security Policy.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12webkit2gtkno fix listedDEBIAN-CVE-2026-43670
Debian:13webkit2gtk2.54.0-1~deb13u1DEBIAN-CVE-2026-43670
Debian:14webkit2gtkno fix listedDEBIAN-CVE-2026-43670
Debian:12wpewebkitno fix listedDEBIAN-CVE-2026-43670
Debian:13wpewebkitno fix listedDEBIAN-CVE-2026-43670
Debian:14wpewebkit2.54.0-1DEBIAN-CVE-2026-43670
Ubuntu:22.04:LTSqtwebkit-opensource-srcno fix listedUBUNTU-CVE-2026-43670
Ubuntu:24.04:LTSqtwebkit-opensource-srcno fix listedUBUNTU-CVE-2026-43670
Ubuntu:22.04:LTSwebkit2gtkno fix listedUBUNTU-CVE-2026-43670
Ubuntu:24.04:LTSwebkit2gtkno fix listedUBUNTU-CVE-2026-43670
Ubuntu:26.04:LTSwebkit2gtkno fix listedUBUNTU-CVE-2026-43670
Ubuntu:26.10webkit2gtkno fix listedUBUNTU-CVE-2026-43670
Ubuntu:22.04:LTSwpewebkitno fix listedUBUNTU-CVE-2026-43670

Affected products (as reported)

VendorProductVersions
Apple Safari 0 – before 26.5
Apple iOS and iPadOS 0 – before 18.7.90 – before 26.5
Apple macOS 0 – before 26.5

Weakness: CWE-693 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

References