---
id: CVE-2026-106502
title: Backstage is an open framework for building developer portals
summary: >-
  Backstage is an open framework for building developer portals. Prior to 4.1.0,
  the @backstage/plugin-scaffolder-backend package could expose sensitive
  information in Scaffolder task failure events. Under specific template and
  failure con…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N'
cwe:
  - CWE-532
  - CWE-209
vendor: linuxfoundation
product: backstage/plugin-scaffolder-backend
affected:
  - backstage/plugin-scaffolder-backend < 4.1.0
  - backstage < 1.54.6
patched:
  - backstage/plugin-scaffolder-backend 4.1.0
  - backstage 1.54.6
published: '2026-10-06'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T14:38:07.077'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-106502'
references:
  - url: >-
      https://github.com/backstage/backstage/commit/3f1e869708f002fb9838624b7379deb251691b47
    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-95p4-vv4g-jxxm
    label: security-advisories@github.com
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-106502'
  - url: 'https://github.com/advisories/GHSA-95p4-vv4g-jxxm'
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-106502.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-106502'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2547223'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-106502'
tags:
  - nvd
  - ghsa
  - npm
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00291
epssPercentile: 0.21507
aliases:
  - GHSA-95p4-vv4g-jxxm
ecosystem: npm
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-07T15:08:57.835240Z'
ingestedAt: '2026-10-06T22:23:15.967Z'
---

## Overview

Backstage is an open framework for building developer portals. Prior to 4.1.0, the @backstage/plugin-scaffolder-backend package could expose sensitive information in Scaffolder task failure events. Under specific template and failure conditions, an authenticated user may retrieve backend-managed credentials used during task execution from affected task events. This issue is fixed in version 4.1.0.

## Affected

- `backstage/plugin-scaffolder-backend < 4.1.0`
- `backstage < 1.54.6`

## Remediation

Upgrade past the affected range:

- `backstage/plugin-scaffolder-backend 4.1.0`
- `backstage 1.54.6`

## Package advisory (CVE-2026-106502)

Affected packages:

- `@backstage/plugin-scaffolder-backend < 4.1.0`

Patched in:

- `@backstage/plugin-scaffolder-backend 4.1.0`

Source: https://github.com/advisories/GHSA-95p4-vv4g-jxxm

## Vendor advisories

- **Red Hat VEX** · Moderate · affected: Red Hat Developer Hub, Self-service automation portal 2 · no fix planned: Red Hat Developer Hub, Self-service automation portal 2 · updated 2026-10-09 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-106502.json)