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CVE-2026-106492

6.5 medium SSVC exploitation: none Analyzed
NVD · CVE.org

Backstage is an open framework for building developer portals. Prior to 0.16.1 and 0.17.8, the @backstage/backend-defaults package is affected by improper preservation of access restrictions during service credential delegation. An external service credential configured with access restrictions (e.g., read-only) could bypass those restrictions by routing requests through plugin delegation paths. This could allow a restricted service to perform operations beyond its intended scope, including write operations on plugins it was restricted to read-only access for. This issue is fixed in versions 0.16.1 and 0.17.8.

Fix

Patch, vendor advisory and mitigation references on NVD 5

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 4

  1. Cpes+2 CPE criteria (now 2)NVD modified 2026-10-22 13:40
  2. StatusUndergoing Analysis → AnalyzedNVD modified 2026-10-22 13:40
  3. CVSS7.6 (v3.1, CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L) → 6.5 (v3.1, CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N)NVD modified 2026-10-22 13:40
  4. First seenCVSS 7.6NVD modified 2026-10-09 02:17

Affected (CPE criteria) 2

  • cpe:2.3:a:linuxfoundation:backstage\/backend-defaults:*:*:*:*:*:node.js:*:*
  • cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*

References 5