CVE-2026-106501

Backstage: Sensitive information exposure in Scaffolder

En bref

Sévérité: CRITICAL 9.6
EPSS: EPSS 0.48 % · centile 41 (2026-10-27)
État: PUBLISHED
Publiée: 2026-10-06
Mise à jour: 2026-10-07
Attribuée par: GitHub_M
Statut NVD: Analyzed

Description

Backstage is an open framework for building developer portals. Prior to 3.3.1, 3.4.1, 4.0.3 and 4.1.0, the @backstage/plugin-scaffolder-backend package is affected by sensitive information exposure in scaffolder. An authenticated Backstage user who can read another user's Scaffolder task may receive internal execution data. In deployments where that data contains credentials for an external service, this may permit disclosure and unauthorized changes in that external service. This issue is fixed in versions 3.3.1, 3.4.1, 4.0.3 and 4.1.0.

Scores

Version	Score	Vecteur	Évalué par
CVSS 3.1	CRITICAL 9.6	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N	GitHub_M
CVSS 3.1	CRITICAL 9.6	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N	NVD · security-advisories@github.com (Secondary)

Faiblesses (CWE)

Avis

GHSA-g2v8-7jhw-pp8p — Backstage: Sensitive information exposure in Scaffolder

Références européennes

ENISA EUVD · EUVD-2026-94059
GCVE · GCVE-0-2026-106501

Configurations affectées (CPE NVD)

cpe:2.3:a:linuxfoundation:backstage\/plugin-scaffolder-backend:*:*:*:*:*:*:*:* < 3.3.1
cpe:2.3:a:linuxfoundation:backstage\/plugin-scaffolder-backend:*:*:*:*:*:*:*:* ≥ 3.4.0 < 3.4.1
cpe:2.3:a:linuxfoundation:backstage\/plugin-scaffolder-backend:*:*:*:*:*:*:*:* ≥ 4.0.0 < 4.0.3
cpe:2.3:a:linuxfoundation:backstage\/plugin-scaffolder-backend:*:*:*:*:*:*:*:* ≥ 4.0.4 < 4.1.0
cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:* < 1.49.6
cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:* ≥ 1.50.0 < 1.50.5
cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:* ≥ 1.51.0 < 1.54.6

Produits affectés

Produit	Versions
backstage · backstage	affected < 1.49.6 ; affected >= 1.50.0-next.0, < 1.50.5 ; affected >= 1.51.0-next.0, < 1.54.6
@backstage · plugin-scaffolder-backend	affected < 3.3.1 ; affected >= 3.4.0, < 3.4.1 ; affected >= 4.0.0, < 4.0.3 ; affected >= 4.0.4, < 4.1.0

Références

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD