CVE-2026-78376
High
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.
SeverityHigh
CVSS8.8
Exploit probability—
Product
WebKit
PublishedAug 24, 2026
First seenAug 24, 2026
Weakness typeCWE-416Use after free
How to fix
Vendor advisories
- 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
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| WebKit WebKit | 2.21.1 | — |
| WebKitGTK WebKitGTK | 2.21.1 | — |
| Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support | No range specified | — |
| enterprise_linux 8 | No range specified | — |
| rhel_aus 8.6 | No range specified | — |
| rhel_e4s 8.8 | No range specified | — |
| enterprise_linux 9 | No range specified | — |
| rhel_e4s 9.2 | No range specified | — |
| rhel_e4s 9.4 | No range specified | — |
| rhel_eus 9.6 | No range specified | — |
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