CVE-2026-3118 — MEDIUM (6.5)

Vulnerability 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.

CVSS Score

6.5

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Redhat	Developer Hub	-

Related Weaknesses (CWE)

CWE-89

References

https://access.redhat.com/errata/RHSA-2026:13826
https://access.redhat.com/errata/RHSA-2026:9742
https://access.redhat.com/security/cve/CVE-2026-3118Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2442273Issue TrackingVendor Advisory

FAQ

What is CVE-2026-3118?

CVE-2026-3118 is a vulnerability with a CVSS score of 6.5 (MEDIUM). 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 c...

How severe is CVE-2026-3118?

CVE-2026-3118 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-3118?

Check the references section above for vendor advisories and patch information. Affected products include: Redhat Developer Hub.