CVE-2026-3118
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
CVE-2026-3118 is a GraphQL injection vulnerability in the Red Hat Developer Hub Orchestrator Plugin that allows authenticated users to crash the entire Backstage application, causing a denial of service.
Vulnerability
CVE-2026-3118 is a GraphQL injection vulnerability found in the Orchestrator Plugin of Red Hat Developer Hub (Backstage). The flaw originates from improper input validation, where user-supplied fields (such as orderBy or filter values) are directly embedded into backend GraphQL queries without proper neutralization of special characters. This allows an attacker to inject malicious JSON payloads that break the query structure. [1][2]
Exploitation
An authenticated user can exploit this remotely by sending specially crafted API requests containing manipulated GraphQL fragments. No additional privileges or user interaction are required beyond standard authentication. The injection triggers unhandled exceptions in the query processing engine. [2]
Impact
Successful exploitation causes the entire Backstage application to crash and automatically restart, resulting in a platform-wide Denial of Service (DoS). Legitimate users temporarily lose access to the platform. The CVSS v3 base score is 6.5 (Medium), with a high impact on availability. [1][2]
Mitigation
Red Hat has released security advisories RHSA-2026:9742 (April 22, 2026) and RHSA-2026:13826 (May 5, 2026) that provide updated container images for the affected components. Users are advised to apply the updates to the latest tagged images to remediate the vulnerability. [3][4]
AI Insight generated on May 19, 2026. Synthesized from this CVE's description and the cited reference URLs; citations are validated against the source bundle.
Affected products
3cpe:2.3:a:redhat:developer_hub:-:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:redhat:developer_hub:-:*:*:*:*:*:*:*
- (no CPE)
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
4- access.redhat.com/security/cve/CVE-2026-3118nvdVendor Advisory
- bugzilla.redhat.com/show_bug.cginvdIssue TrackingVendor Advisory
- access.redhat.com/errata/RHSA-2026:13826nvd
- access.redhat.com/errata/RHSA-2026:9742nvd
News mentions
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