---
id: CVE-2026-106496
title: Backstage is an open framework for building developer portals
summary: >-
  Backstage is an open framework for building developer portals. Prior to 3.9.1,
  the @backstage/plugin-catalog-backend package is affected by inconsistent
  enforcement of allowed location types during catalog processing. Under certain
  confi…
severity: low
cvss: 3.1
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N'
cwe:
  - CWE-22
  - CWE-863
  - CWE-552
vendor: linuxfoundation
product: backstage_plugin-catalog-backend
affected:
  - backstage_plugin-catalog-backend < 3.9.1
  - backstage < 1.54.6
patched:
  - backstage_plugin-catalog-backend 3.9.1
  - backstage 1.54.6
published: '2026-10-06'
updated: '2026-10-16'
sourceUpdated: '2026-10-16T15:33:47.510'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-106496'
references:
  - url: >-
      https://github.com/backstage/backstage/commit/23774b61560d851bc69cd6a77d12561b24d11afd
    label: security-advisories@github.com
  - url: 'https://github.com/backstage/backstage/releases/tag/v1.54.6'
    label: security-advisories@github.com
  - url: >-
      https://github.com/backstage/backstage/security/advisories/GHSA-pcmq-25r3-5w9v
    label: security-advisories@github.com
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-106496'
  - url: 'https://github.com/advisories/GHSA-pcmq-25r3-5w9v'
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-106496.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-106496'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2547211'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-106496'
tags:
  - nvd
  - cve.org
  - ghsa
  - npm
  - csaf
  - vex
  - red-hat
epss: 0.00244
epssPercentile: 0.15487
aliases:
  - GHSA-pcmq-25r3-5w9v
ecosystem: npm
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-07T15:27:09.255888Z'
ingestedAt: '2026-10-06T22:23:15.965Z'
---

## Overview

Backstage is an open framework for building developer portals. Prior to 3.9.1, the @backstage/plugin-catalog-backend package is affected by inconsistent enforcement of allowed location types during catalog processing. Under certain configurations, the catalog backend could process location types that were not intended to be allowed, potentially leading to unintended file access on the backend host. This issue is fixed in version 3.9.1.

## Affected

- `backstage_plugin-catalog-backend < 3.9.1`
- `backstage < 1.54.6`

## Remediation

Upgrade past the affected range:

- `backstage_plugin-catalog-backend 3.9.1`
- `backstage 1.54.6`

## Package advisory (CVE-2026-106496)

Affected packages:

- `@backstage/plugin-catalog-backend < 3.9.1`

Patched in:

- `@backstage/plugin-catalog-backend 3.9.1`

Source: https://github.com/advisories/GHSA-pcmq-25r3-5w9v

## Vendor advisories

- **Red Hat VEX** · Low · affected: Red Hat Developer Hub, Self-service automation portal 2 · no fix planned: Red Hat Developer Hub, Self-service automation portal 2 · updated 2026-10-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-106496.json)