Medium4.3Vendor: HighRed Hat & Ubuntu Linux
A malicious website may be able to access script message handlers intended for other origins
CVE-2026-28861 Published Mar 28, 2026
CVE-2026-28861
Affected products & platforms
Red Hat & Ubuntu LinuxUnclassified
Summary
A malicious website may be able to access script message handlers intended for other origins. Red Hat rates this important (CVSS 4.3). Weakness: CWE-346. No fix erratum has been published yet; monitor the Red Hat CVE page and apply the RHSA when released.
Mitigation checklist
Recommended fix / mitigation
- Red Hat rates this important; a fix erratum may not be out yet — apply the RHSA as soon as it publishes.
Official advisory · high-confidence parse· fetched 4 hours ago·verify at source
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