CVE-2026-106488

highPriorität · verfolgen · 0EPSS 0.003 · 20. PerzentilUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.28% (20th) EPSS

CVSS 8.1 · high

Is it mine?

3 products

Prüfe deine Angriffsfläche

Who says so?

2 sources

nvd · osv

EPSS · bewertet 2026-10-27

Backstage is an open framework for building developer portals. Prior to 0.4.20, the @backstage/plugin-auth-backend-module-oidc-provider package is affected by improper authentication in the oidc provider. Deployments using OIDC email-based identity resolution with a provider that permits unverified email addresses may allow an authenticated provider user to assume another catalog identity. This may grant access and permissions associated with that user. No direct availability impact is demonstrated. This issue is fixed in version 0.4.20.

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-287USCWE-287US

betroffene Produkte (3)

Betroffene Produkte und Versionsbereiche.

linuxfoundation backstage< 1.54.6nvdUScpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*
linuxfoundation backstage/plugin-auth-backend-module-oidc-provider< 0.4.20nvdUScpe:2.3:a:linuxfoundation:backstage\/plugin-auth-backend-module-oidc-provider:*:*:*:*:*:*:*:*
npm @backstage/plugin-auth-backend-module-oidc-provider< 0.4.20osvUSpkg:npm/%40backstage/plugin-auth-backend-module-oidc-provider

Advisories (1)

Hersteller- und Ökosystem-Meldungen dazu.

GHSA-826h-28h9-65hgBackstage: Improper authentication in the OIDC provider2026-10-07ghsa · osvUS
### Impact Deployments using OIDC email-based identity resolution with a provider that permits unverified email addresses may allow an authenticated provider user to assume another catalog identity. This may grant access and permissions associated with that user. No direct availability impact is demonstrated. ### Patches Patched in `@backstage/plugin-auth-backend-module-oidc-provider` version `0.4.20`. ### Workarounds - Disable email-based sign-in resolution for the OIDC provider, or require the identity provider to verify email addresses before allowing sign-in.

quellen

Welche Quellen diesen Datensatz belegen und wann.

nvd osv NVD CVE.org MITRE

veröffentlicht 2026-10-06geändert 2026-10-22

Referenzen (3) nvd

Externe Belege — Patches, Meldungen, Analysen.

https://github.com/backstage/backstage/commit/1b1f05e82161aaabc226c1d7d498d746956bf942Patch
https://github.com/backstage/backstage/releases/tag/v1.54.6PatchRelease Notes
https://github.com/backstage/backstage/security/advisories/GHSA-826h-28h9-65hgMitigationVendor Advisory

scry

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