Incomplete mitigation of CVE-2026-4519, %action expansion for command injection to webbrowser.open()
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.
01
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-4786US | — | — | ||
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… | ||||
02
references
External citations — patches, advisories, analysis.
- https://access.redhat.com/errata/RHSA-2026:10117WEB
- https://access.redhat.com/errata/RHSA-2026:10140WEB
- https://access.redhat.com/errata/RHSA-2026:10141WEB
- https://access.redhat.com/errata/RHSA-2026:10711WEB
- https://access.redhat.com/errata/RHSA-2026:10745WEB
- https://access.redhat.com/errata/RHSA-2026:10774WEB
- https://access.redhat.com/errata/RHSA-2026:10949WEB
- https://access.redhat.com/errata/RHSA-2026:10950WEB
scry
Advisories like this name the exposed products attackers go after on your perimeter. See what is exposed on your perimeter with a free passive scan.
Free scan