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Test your applicationsThere is no fixed version for RHEL:8 platform-python-debug.
Note: Versions mentioned in the description apply only to the upstream platform-python-debug package and not the platform-python-debug package as distributed by RHEL.
See How to fix? for RHEL:8 relevant fixed versions and status.
Mitgation of CVE-2026-4519 was incomplete. If the URL contained "%action" the mitigation could be bypassed for certain browser types the "webbrowser.open()" API could have commands injected into the underlying shell. See CVE-2026-4519 for details.