CVE WatchOct 22, 2026

CVE-2026-106492

Backstage is an open framework for building developer portals. Prior to 0.16.1 and 0.17.8, the @backstage/backend-defaults package is affect

CVSS

7.6

High

EPSS

0.2%

p14

KEV

—

Exploit Today

0-100

Published: Oct 6, 2026 · Last modified: Oct 22, 2026 · CWE-269 · CWE-863

EPSS · 30d

0.2%EPSS · 30 days0.2%

2026-10-072026-10-22

Technical description

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.

Official references

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