CVE-2026-106503

highPriorität · verfolgen · 0EPSS 0.004 · 31. PerzentilUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.38% (31st) EPSS

CVSS 8.1 · high

Is it mine?

11 products

Prüfe deine Angriffsfläche

Who says so?

2 sources

nvd · osv

EPSS · bewertet 2026-10-24

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 scaffolder action input authorization bypass. 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. This issue is fixed in versions 3.3.1, 3.4.1, 4.0.3 and 4.1.0.

cvss

Technischer Schweregrad, 0–10. Eine Zeile je Quelle.

8.1

010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen

v3.18.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Nsecondary · security-advisories@github.comAusnutzbarkeit 2.8 · Auswirkung 5.2

v3.18.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Nsecondary · OSV

v3.17.4highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

SSVC

Eine Handlungsentscheidung — aus Ausnutzung und Auswirkung.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-178USCWE-178USCWE-284USCWE-284US

betroffene Produkte (11)

Betroffene Produkte und Versionsbereiche.

linuxfoundation backstage< 1.49.6nvdUScpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*
linuxfoundation backstage1.50.0 → 1.50.5nvdUScpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*
linuxfoundation backstage1.51.0 → 1.54.6nvdUScpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*
linuxfoundation backstage/plugin-scaffolder-backend< 3.3.1nvdUScpe:2.3:a:linuxfoundation:backstage\/plugin-scaffolder-backend:*:*:*:*:*:*:*:*
linuxfoundation backstage/plugin-scaffolder-backend3.4.0 → 3.4.1nvdUScpe:2.3:a:linuxfoundation:backstage\/plugin-scaffolder-backend:*:*:*:*:*:*:*:*
linuxfoundation backstage/plugin-scaffolder-backend4.0.0 → 4.0.3nvdUScpe:2.3:a:linuxfoundation:backstage\/plugin-scaffolder-backend:*:*:*:*:*:*:*:*
linuxfoundation backstage/plugin-scaffolder-backend4.0.4 → 4.1.0nvdUScpe:2.3:a:linuxfoundation:backstage\/plugin-scaffolder-backend:*:*:*:*:*:*:*:*
npm @backstage/plugin-scaffolder-backend< 3.3.1osvUSpkg:npm/%40backstage/plugin-scaffolder-backend
npm @backstage/plugin-scaffolder-backend3.4.0 → 3.4.1osvUSpkg:npm/%40backstage/plugin-scaffolder-backend
npm @backstage/plugin-scaffolder-backend4.0.0 → 4.0.3osvUSpkg:npm/%40backstage/plugin-scaffolder-backend
npm @backstage/plugin-scaffolder-backend4.0.4 → 4.1.0osvUSpkg:npm/%40backstage/plugin-scaffolder-backend

Advisories (1)

Hersteller- und Ökosystem-Meldungen dazu.

GHSA-hmp2-4m7g-22cvBackstage: Scaffolder action input authorization bypass2026-10-07ghsa · osvUS
### 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.

quellen

Welche Quellen diesen Datensatz belegen und wann.

nvd osv NVD CVE.org MITRE

veröffentlicht 2026-10-06geändert 2026-10-13

Referenzen (7) nvd

Externe Belege — Patches, Meldungen, Analysen.

https://github.com/backstage/backstage/commit/11c1384c0649b8ab26391c6a4e4f34b80ab0d188Patch
https://github.com/backstage/backstage/commit/a91ed72d540e80b62a73b39bb1563ff5018d52d1Patch
https://github.com/backstage/backstage/commit/e307e4f487103d815e484291b3fda778ab9983bfPatch
https://github.com/backstage/backstage/releases/tag/v1.49.6PatchRelease Notes
https://github.com/backstage/backstage/releases/tag/v1.50.5PatchRelease Notes
https://github.com/backstage/backstage/releases/tag/v1.54.6PatchRelease Notes
https://github.com/backstage/backstage/security/advisories/GHSA-hmp2-4m7g-22cvMitigationVendor Advisory

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