CVE-2020-10018

Severity: critical (CVSS 9.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 5.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-03-02 · updated 2026-06-17
Weakness: CWE-416

Description

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.

Affected products

Canonical Ubuntu Linux: 18.04, 19.10
Debian Linux: 10.0
Fedoraproject Fedora: 30, 31
openSUSE Leap: 15.1
Webkit: before 2.28.0 — fixed in 2.28.0
Wpewebkit Wpe Webkit: before 2.28.0 — fixed in 2.28.0

How to fix

Upgrade to a fixed version: Webkit 2.28.0; Wpewebkit Wpe Webkit 2.28.0. Check the vendor advisory for mitigations.

References

http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00008.html
https://bugs.webkit.org/show_bug.cgi?id=204342#c21
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DOR5LPL4UASVAR76EIHCL4O2KGDWGC6K/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GLERWAS2LL7SX2GHA2DDZ2PL3QC5OHIF/
https://security.gentoo.org/glsa/202006-08
https://usn.ubuntu.com/4310-1/
https://webkitgtk.org/security/WSA-2020-0003.html
https://wpewebkit.org/security/WSA-2020-0003.html
https://www.debian.org/security/2020/dsa-4641
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00008.html
https://bugs.webkit.org/show_bug.cgi?id=204342#c21
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DOR5LPL4UASVAR76EIHCL4O2KGDWGC6K/

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