This update for webkit2gtk3 to version 2.26.4 fixes the following issues:

Security issues fixed:

- CVE-2019-8835: Fixed multiple memory corruption issues (bsc#1161719).
- CVE-2019-8844: Fixed multiple memory corruption issues (bsc#1161719).
- CVE-2019-8846: Fixed a use-after-free issue (bsc#1161719).
- CVE-2020-3862: Fixed a memory handling issue (bsc#1163809).
- CVE-2020-3864: Fixed a logic issue in the DOM object context handling (bsc#1163809).
- CVE-2020-3865: Fixed a logic issue in the DOM object context handling (bsc#1163809).
- CVE-2020-3867: Fixed an XSS issue (bsc#1163809).
- CVE-2020-3868: Fixed multiple memory corruption issues that could have lead to arbitrary code execution (bsc#1163809).

Non-security issues fixed:

- Fixed issues while trying to play a video on NextCloud.
- Fixed vertical alignment of text containing arabic diacritics.
- Fixed build with icu 65.1.
- Fixed page loading errors with websites using HSTS.
- Fixed web process crash when displaying a KaTeX formula.
- Fixed several crashes and rendering issues.
- Switched to a single web process for Evolution and geary (bsc#1159329 glgo#GNOME/evolution#587).

This update was imported from the SUSE:SLE-15:Update update project.