GHSA-mfvq-x7vr-rgqg

Source

https://github.com/advisories/GHSA-mfvq-x7vr-rgqg

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-mfvq-x7vr-rgqg/GHSA-mfvq-x7vr-rgqg.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-mfvq-x7vr-rgqg

Aliases

CVE-2026-106499

Published

2026-10-07T17:59:14Z

Modified

2026-10-07T18:15:10Z

Severity

4.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N CVSS Calculator

Summary

Backstage: Secret-derived values may be exposed in scaffolder task logs

Details

Impact

Deployments that configure sensitive scaffolder.defaultEnvironment.secrets and allow an attacker to create or modify Scaffolder templates are affected. A template author could cause secret-derived values used during template iteration to be persisted in task logs, exposing those values to users with access to the resulting task logs.

Patches

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

Workarounds

Restrict permission to create or update Template entities to fully trusted parties, as recommended by the Backstage threat model.
If that restriction cannot be guaranteed, remove sensitive values from scaffolder.defaultEnvironment.secrets until a patched version is available.

No complete workaround is known that preserves both untrusted template authoring and access to sensitive default-environment secrets.

Database specific

{
    "cwe_ids": [
        "CWE-532"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-10-07T17:59:14Z",
    "nvd_published_at": "2026-10-06T22:17:04Z",
    "severity": "MODERATE"
}

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

4.1.0

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-mfvq-x7vr-rgqg/GHSA-mfvq-x7vr-rgqg.json"