CVE-2026-6993 MEDIUM

CVE-2026-6993: go-kratos http.DefaultServeMux Fallback server.go NewServer confused deputy

Vendor Go-Kratos
Product kratos
Weakness CWE-441
Published April 25, 2026
Last update April 27, 2026

CVSS base score

6.9/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

A security flaw has been discovered in go-kratos kratos up to 2.9.2. This impacts the function NewServer of the file transport/http/server.go of the component http.DefaultServeMux Fallback Handler. The manipulation results in unintended intermediary. The attack may be launched remotely. The exploit has been released to the public and may be used for attacks. The patch is identified as 0284a5bcf92b5a7ee015300ce3051baf7ae4718d. Applying a patch is advised to resolve this issue.

Key dates

02Disclosure timeline

April 25, 2026 CVE published
April 27, 2026 Record updated