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

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Summary

CVECVE-2026-3118
StatePUBLISHED
Assignerredhat
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-02-25 12:16:17 UTC
Updated2026-04-22 20:16:41 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v3.1 6.5 MEDIUM from [email protected]

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

EPSS: 0.000160000 probability, percentile 0.035520000 (date 2026-04-22)

Problem Types: CWE-89 | CWE-89 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.1CNACVSS6.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

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

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Redhat Developer Hub - All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Red Hat Red Hat Developer Hub 1.8 unaffected sha256:bb763e2b7a9d101f73b03b9e1c5688e7034fd9d31413e890817bd4098a7d42f9 * rpm Not specified

References

ReferenceSourceLinkTags
access.redhat.com/errata/RHSA-2026:9742 [email protected] access.redhat.com
access.redhat.com/security/cve/CVE-2026-3118 [email protected] access.redhat.com Vendor Advisory
bugzilla.redhat.com/show_bug.cgi [email protected] bugzilla.redhat.com Issue Tracking, Vendor Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Red Hat would like to thank Thibault Guittet for reporting this issue. (en)

Additional Advisory Data

SourceTimeEvent
CNA2026-02-24T12:08:42.955ZReported to Red Hat.
CNA2026-02-24T00:00:00.000ZMade public.

Workarounds

CNA: To mitigate this issue, restrict network access to the Red Hat Developer Hub instance to trusted users and networks only. This limits the exposure of the vulnerable Orchestrator Plugin to unauthorized access.

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