CVE-2026-4786

Public on 2026-04-13

Modified on 2026-04-14

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.

Severity

Important

See what this means

CVSS v3 Base Score

7.1

See breakdown

Affected Packages

Platform	Package	Status
Amazon Linux 2 - Core	python	Pending Fix
Amazon Linux 2 - Core	python3	Pending Fix
Amazon Linux 2023	python3.11	Pending Fix
Amazon Linux 2023	python3.12	Pending Fix
Amazon Linux 2023	python3.13	Pending Fix
Amazon Linux 2023	python3.14	Pending Fix
Amazon Linux 2023	python3.9	Pending Fix

CVSS Scores

	Score Type	Score	Vector
Amazon Linux	CVSSv3	7.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:L

References

FAQs regarding Amazon Linux ALAS/CVE Severity Red Hat: CVE-2026-4786 Mitre: CVE-2026-4786