CVE-2026-3118 MEDIUM

CVE-2026-3118: Rhdh: graphql injection leading to platform-wide denial of service (dos) in rh developer hub orchestrator plugin

Weakness CWE-89 · SQLi
Published February 25, 2026
Last update May 5, 2026

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

A security flaw was identified in the Orchestrator Plugin of Red Hat Developer Hub (Backstage). The issue occurs due to insufficient input validation in GraphQL query handling. An authenticated user can inject specially crafted input into API requests, which disrupts backend query processing. This results in the entire Backstage application crashing and restarting, leading to a platform-wide Denial of Service (DoS). As a result, legitimate users temporarily lose access to the platform.

Key dates

02Disclosure timeline

February 25, 2026 CVE published
May 5, 2026 Record updated