GHSA-hmp2-4m7g-22cv

Suggest an improvement
Source
https://github.com/advisories/GHSA-hmp2-4m7g-22cv
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-hmp2-4m7g-22cv/GHSA-hmp2-4m7g-22cv.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-hmp2-4m7g-22cv
Aliases
Published
2026-10-07T17:59:08Z
Modified
2026-10-07T18:15:12Z
Severity
  • 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N CVSS Calculator
Summary
Backstage: Scaffolder action input authorization bypass
Details

Impact

An authenticated user with access to affected Scaffolder templates could bypass configured action restrictions. Depending on integration credentials, this could grant unauthorized access to repositories and related source-control resources.

Patches

Patched in @backstage/plugin-scaffolder-backend version 4.1.0

Workarounds

  • Restrict affected Scaffolder actions to trusted users and configure source-control integrations with least-privilege credentials.
Database specific 
{
    "cwe_ids": [
        "CWE-178",
        "CWE-284"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-10-07T17:59:08Z",
    "nvd_published_at": "2026-10-06T22:17:05Z",
    "severity": "HIGH"
}
References

Affected packages

npm
@backstage/plugin-scaffolder-backend

Package

Name
@backstage/plugin-scaffolder-backend
View open source insights on deps.dev
Purl
pkg:npm/%40backstage/plugin-scaffolder-backend

Affected ranges

Type
SEMVER
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
3.3.1

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-hmp2-4m7g-22cv/GHSA-hmp2-4m7g-22cv.json"
@backstage/plugin-scaffolder-backend

Package

Name
@backstage/plugin-scaffolder-backend
View open source insights on deps.dev
Purl
pkg:npm/%40backstage/plugin-scaffolder-backend

Affected ranges

Type
SEMVER
Events
Introduced
3.4.0
Fixed
3.4.1

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-hmp2-4m7g-22cv/GHSA-hmp2-4m7g-22cv.json"
@backstage/plugin-scaffolder-backend

Package

Name
@backstage/plugin-scaffolder-backend
View open source insights on deps.dev
Purl
pkg:npm/%40backstage/plugin-scaffolder-backend

Affected ranges

Type
SEMVER
Events
Introduced
4.0.0
Fixed
4.0.3

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-hmp2-4m7g-22cv/GHSA-hmp2-4m7g-22cv.json"
@backstage/plugin-scaffolder-backend

Package

Name
@backstage/plugin-scaffolder-backend
View open source insights on deps.dev
Purl
pkg:npm/%40backstage/plugin-scaffolder-backend

Affected ranges

Type
SEMVER
Events
Introduced
4.0.4
Fixed
4.1.0

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-hmp2-4m7g-22cv/GHSA-hmp2-4m7g-22cv.json"