Medium5.4Red Hat & Ubuntu Linux
Processing maliciously crafted web content may bypass Same Origin Policy
CVE-2026-20643 Published Mar 28, 2026
CVE-2026-20643
Affected products & platforms
Red Hat & Ubuntu LinuxUnclassified
Summary
Processing maliciously crafted web content may bypass Same Origin Policy. Red Hat rates this moderate (CVSS 5.4). Weakness: CWE-346. Affected package(s): webkit2gtk3, webkitgtk4. Resolved in Red Hat advisory RHSA-2026:19206 — update the affected packages (`sudo dnf update`).
Affected versions
- webkit2gtk3-0:2.52.3-1.el8_8
- webkit2gtk3-0:2.52.3-1.el9_6
- webkit2gtk3-0:2.52.3-1.el8_6
- webkitgtk4-0:2.52.3-1.el7_9
- webkit2gtk3-0:2.52.3-0.el9_7.1
- webkit2gtk3-0:2.52.3-1.el9_4
- webkit2gtk3-0:2.52.3-1.el8_10
- webkit2gtk3-0:2.52.3-1.el8_4
- webkit2gtk3-0:2.52.3-1.el9_2
- webkit2gtk3-0:2.52.3-1.el9_0
- webkit2gtk3-0:2.52.3-1.el9_8
Official advisory · high-confidence parse· fetched 5 hours ago·verify at source
Fixed versions
- RHSA-2026:19206
Official advisory · high-confidence parse· fetched 5 hours ago·verify at source
Mitigation checklist
Recommended fix / mitigation
- Update the affected package(s) to the fixed version shipped in RHSA-2026:19206 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 5 hours ago·verify at source
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