---
title: "CVE-2026-43701\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2026-43701?format=md
keywords: index, follow
---

# CVE-2026-43701

Publication date 29 June 2026

Last updated 31 August 2026

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**7.1 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2026-43701?format=md#impact-score)

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## Description

The issue was addressed with improved checks. This issue is fixed in Safari
26.5.2, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.5.2 and iPadOS 26.5.2, macOS
Tahoe 26.5.2, tvOS 26.6, visionOS 26.6, watchOS 26.6. A malicious website
may be able to process restricted web content outside the sandbox.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2026-43701?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| webkitgtk | 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 | 26.04 LTS resolute | Fixed 2.52.6-0ubuntu0.26.04.1 |
| 24.04 LTS noble | Fixed 2.52.6-0ubuntu0.24.04.1 |
| 22.04 LTS jammy | Ignored |
| 20.04 LTS focal | Ignored |
| 18.04 LTS bionic | Ignored |
| 16.04 LTS xenial | Ignored |
| qtwebkit-source | 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 | 26.04 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 | 26.04 LTS resolute | Not in release |
| 24.04 LTS noble | Not in release |
| 22.04 LTS jammy | Needs evaluation |
| 20.04 LTS focal | Needs evaluation |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Notes

---

### [jdstrand](https://launchpad.net/~jdstrand)

webkit receives limited support. For details, see
https://wiki.ubuntu.com/SecurityTeam/FAQ#webkit
webkit in Ubuntu uses the JavaScriptCore (JSC) engine, not V8

---

### [mdeslaur](https://launchpad.net/~mdeslaur)

It is no longer possible to build new webkit2gtk versions on
jammy and earlier. Marking as ignored.
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.

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

7.1 · High

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | None |
  | User interaction | Required |
  | Scope | Changed |
  | Confidentiality impact | Low |
  | Integrity impact | Low |
  | Availability impact | Low |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 7.1 · High |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-43701)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2026-43701)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2026-43701)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2026-43701)

### Related Ubuntu Security Notices (USN)

+ [USN-8703-1](https://usn.ubuntu.com/USN-8703-1)
+ WebKitGTK vulnerabilities
+ 31 August 2026

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2026-43701>
* <https://webkitgtk.org/security/WSA-2026-0004.html>