CVE-2026-3118

Name: CVE-2026-3118
Creator: NVD / NIST
Published: 2026-02-25T12:16:17.957+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.53%

Last modified Jun 17, 2026

CVE-2026-3118 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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. EPSS estimates a 0.53% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

0.53%

40.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-89

Affected Software

Vendor	Product	Versions
Redhat	Developer Hub	All versions

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 Tracking, Vendor Advisory

Timeline

Published: Feb 25, 2026
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2026-3118?

How severe is CVE-2026-3118?

CVE-2026-3118 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.53% probability of exploitation in the next 30 days.

How do I fix CVE-2026-3118?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-3118?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST