CVE-2026-43670
Publication date 25 August 2026
Last updated 28 October 2026
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| webkitgtk | 26.10 stonking | Not in release |
| 26.04 LTS resolute | Not in release | |
| 24.04 LTS noble | Not in release | |
| 22.04 LTS jammy | Not in release | |
| 18.04 LTS bionic | Ignored | |
| 16.04 LTS xenial | Ignored | |
| webkit2gtk | 26.10 stonking |
Vulnerable, fix deferred
|
| 26.04 LTS resolute |
Vulnerable, fix deferred
|
|
| 24.04 LTS noble |
Vulnerable, fix deferred
|
|
| 22.04 LTS jammy | Ignored | |
| 20.04 LTS focal | Ignored | |
| 18.04 LTS bionic | Ignored | |
| 16.04 LTS xenial | Ignored | |
| qtwebkit-source | 26.10 stonking | Not in release |
| 26.04 LTS resolute | Not in release | |
| 24.04 LTS noble | Not in release | |
| 22.04 LTS jammy | Not in release | |
| 18.04 LTS bionic | Ignored | |
| 16.04 LTS xenial | Ignored | |
| qtwebkit-opensource-src | 26.10 stonking | Not in release |
| 26.04 LTS resolute | Not in release | |
| 24.04 LTS noble | Ignored | |
| 22.04 LTS jammy | Ignored | |
| 20.04 LTS focal | Ignored | |
| 18.04 LTS bionic | Ignored | |
| 16.04 LTS xenial | Ignored | |
| wpewebkit | 26.10 stonking | Not in release |
| 26.04 LTS resolute | Not in release | |
| 24.04 LTS noble | Not in release | |
| 22.04 LTS jammy | Ignored | |
| 20.04 LTS focal | Ignored |
Notes
mdeslaur
webkit receives limited support. For details, see https://wiki.ubuntu.com/SecurityTeam/FAQ#webkit webkit in Ubuntu uses the JavaScriptCore (JSC) engine, not V8 wpewebkit isn't used by anything of importance in the archive, except for cog, an example container for wpewebkit. There is no point in attempting to backport newer wpewebkit versions to the archive. As such, marking as ignored. It is not feasible to fix webkitgtk, qtwebkit-source, and qtwebkit-opensource-src. Marking them as ignored. It is no longer possible to build new webkit2gtk versions on jammy and earlier. Marking as ignored. Since 2.54.0, webkit2gtk no longer builds on big-endian platforms due to the switch to Skia. It is no longer possible to update stable Ubuntu releases to newer versions of webkit2gtk. Marking as deferred for now.
Severity score breakdown
CVSS version: CVSS v3.0
Base score
8.8 · High
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H