CVE-2026-4786

CVE Details

Release Date:	2026-04-13
Impact:	Important	What is this?

Description

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.

See more information about CVE-2026-4786 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	7.1
Vector String:	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L
Version:	3.1
Attack Vector:	Network
Attack Complexity:	High
Privileges Required:	None
User Interaction:	Required
Scope:	Unchanged
Confidentiality Impact:	High
Integrity Impact:	High
Availability Impact:	Low

Errata information

Platform	Errata	Release Date
Oracle Linux version 10 (python3.12)	ELSA-2026-10711	2026-04-27
Oracle Linux version 8 (python3)	ELSA-2026-11077	2026-04-28
Oracle Linux version 8 (python3.11)	ELSA-2026-11062	2026-04-27
Oracle Linux version 8 (python3.12)	ELSA-2026-10950	2026-04-27
Oracle Linux version 9 (python3.11)	ELSA-2026-10774	2026-04-27
Oracle Linux version 9 (python3.12)	ELSA-2026-10745	2026-04-27
Oracle Linux version 9 (python3.9)	ELSA-2026-10949	2026-04-27