CVE-2026-3118 Rhdh: graphql injection leading to platform-wide denial of service (dos) in rh developer hub orchestrator plugin
An authenticated user can inject GraphQL queries to crash the Red Hat Developer Hub, causing a platform-wide denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-3118?
CVE-2026-3118 is a medium-severity vulnerability in Red Hat Developer Hub 1.8, published on 25 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-89
Which versions are affected by CVE-2026-3118?
It affects 1 product.
Products include Redhat Developer Hub.
How do I fix CVE-2026-3118?
No fix has been published for CVE-2026-3118 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-3118 being exploited?
There is no known exploitation of CVE-2026-3118 in the wild and no public exploit code.
Sources
Also known as GHSA-qvwr-8759-6g2c.