Description
A flaw was found in WebKitGTK. Processing malicious web content can cause a use-after-free issue due to improper memory handling and result in memory corruption.
References10
- access.redhat.com/errata/RHSA-2026:69098
- access.redhat.com/errata/RHSA-2026:74084
- access.redhat.com/errata/RHSA-2026:89821
- access.redhat.com/errata/RHSA-2026:89822
- access.redhat.com/errata/RHSA-2026:91631
- access.redhat.com/errata/RHSA-2026:92216
- access.redhat.com/errata/RHSA-2026:92339
- access.redhat.com/errata/RHSA-2026:93435
- access.redhat.com/errata/RHSA-2026:95403
- access.redhat.com/security/cve/CVE-2026-78376
Metrics
- CVSS 3.1
-
8.8
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 41 · as of 9 November 2026
- CWE
- CWE-416
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.