CVE-2026-56858

Published: Aug 13, 2026Modified: Sep 3, 2026

6.1

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Exploitability: 2.8 / Impact: 2.7

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

Description

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

Related CWEs

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

References (4)

https://go.dev/cl/807100

Source: security@golang.org

https://go.dev/issue/80435

Source: security@golang.org

https://groups.google.com/g/golang-announce/c/94pEornpRlI

Source: security@golang.org

https://pkg.go.dev/vuln/GO-2026-6091

Source: security@golang.org

Timeline

No history available yet.