WebKitGTK through 2.26.4 and WPE WebKit through 2.26.4 (which are the versions right before 2.28.0) contains a memory corruption issue (use-after-free) that may lead to arbitrary code execution. This issue has been fixed in 2.28.0 with improved memory handling.
https://wpewebkit.org/security/WSA-2020-0003.html
https://bugs.webkit.org/show_bug.cgi?id=204342#c21
https://webkitgtk.org/security/WSA-2020-0003.html
https://www.debian.org/security/2020/dsa-4641
https://usn.ubuntu.com/4310-1/
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00008.html
Source: MITRE
Published: 2020-03-02
Updated: 2022-04-22
Type: CWE-416
Base Score: 7.5
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Impact Score: 6.4
Exploitability Score: 10
Severity: HIGH
Base Score: 9.8
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 3.9
Severity: CRITICAL