8.8
High
CVE-2026-78376 Webkitgtk: use-after-free of jscvalue function parameters
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.
CVSS 3.1 detail
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitable remotely over the network, without an account and if a user takes an action; an attacker can seriously compromise confidentiality, integrity or availability.
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- Interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Webkit 2.21 | 2.21.1 → latest | No fix stated |
| webkitgtk 2.21 | 2.21.1 → latest | No fix stated |
| Red Hat Enterprise Linux 6 | Versions not published | |
| Red Hat Enterprise Linux 7 | Versions not published | |
| Red Hat Enterprise Linux 8 | Versions not published | |
| Red Hat Enterprise Linux 9 | Versions not published | |
| Red Hat Enterprise Linux 9.6 Extended Update Support | Versions not published | |
| Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | Versions not published | |
| Red Hat Enterprise Linux 7 Extended Lifecycle Support | Versions not published |
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| Product | Affected versions | Fixed in |
|---|---|---|
| Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | Versions not published | |
| Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On | Versions not published | |
| Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions | Versions not published | |
| Red Hat Enterprise Linux 8.8 Telecommunications Update Service | Versions not published | |
| Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions | Versions not published | |
| Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | Versions not published | |
| Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On | Versions not published |
References
- RHSA-2026:69098 access.redhat.com
- RHSA-2026:74084 access.redhat.com
- RHSA-2026:89821 access.redhat.com
- RHSA-2026:89822 access.redhat.com
- RHSA-2026:91631 access.redhat.com
- RHSA-2026:92216 access.redhat.com
- RHSA-2026:92339 access.redhat.com
- RHSA-2026:93435 access.redhat.com
- RHSA-2026:95403 access.redhat.com
- access.redhat.com access.redhat.com
- RHBZ#2521858 bugzilla.redhat.com
- github.com github.com
Timeline
- Published
- Last modified