GHSA-rg9r-hr7g-5gc2

Suggest an improvement
Source
https://github.com/advisories/GHSA-rg9r-hr7g-5gc2
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-rg9r-hr7g-5gc2/GHSA-rg9r-hr7g-5gc2.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-rg9r-hr7g-5gc2
Aliases
Published
2026-10-07T18:00:06Z
Modified
2026-10-07T18:15:13Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
Backstage: Improper authorization enforcement for TechDocs static content
Details

Impact

An authenticated user with access to one TechDocs documentation site could craft a URL able to read documentation belonging to a different entity. This only affects deployments using the external TechDocs builder with an external storage provider (S3, GCS, etc.) and the permission framework enabled. Instances that do not use the permission framework are unaffected, since TechDocs content is visible to all authenticated users by design.

Patches

Patched in @backstage/plugin-techdocs-backend version 2.2.4

Workarounds

  • None other than upgrading. Deployments that serve TechDocs from local storage are not affected.
Database specific 
{
    "cwe_ids": [
        "CWE-22",
        "CWE-862"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-10-07T18:00:06Z",
    "nvd_published_at": "2026-10-06T21:17:17Z",
    "severity": "MODERATE"
}
References

Affected packages

npm / @backstage/plugin-techdocs-backend

Package

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

Affected ranges

Type
SEMVER
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.2.4

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-rg9r-hr7g-5gc2/GHSA-rg9r-hr7g-5gc2.json"