CVE-2026-56858

Public on 2026-08-13

Modified on 2026-08-15

Description

Previously, pathological inputs could close an unescaped '/' early, allowing for attack-controlled data to inject arbitrary content, potentially leading to XSS.

Severity

Medium

See what this means

CVSS v3 Base Score

6.1

See breakdown

Affected Packages

Platform	Package	Status
Amazon Linux 2 - Core	golang	Pending Fix
Amazon Linux 2 - Golang1.11 Extra	golang	No Fix Planned
Amazon Linux 2 - Golang1.19 Extra	golang	No Fix Planned
Amazon Linux 2 - Golang1.9 Extra	golang	No Fix Planned
Amazon Linux 2023	golang	Pending Fix

CVSS Scores

	Score Type	Score	Vector
Amazon Linux	CVSSv3	6.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

References

FAQs regarding Amazon Linux ALAS/CVE Severity Red Hat: CVE-2026-56858 Mitre: CVE-2026-56858