CVE-2026-106500High· 8.5▾ TwilightBackstage 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 improper task state validation in scaffolder backend. An authenticated…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 46.8 · likelihood 0.1 · exploitation 0
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Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.
Exploit-prediction probability, daily snapshots since Oct 8.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.3%
Last analysed / modified upstream
0.3% → 0.3%
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 improper task state validation in scaffolder backend. An authenticated user with permission to create and access Scaffolder tasks may, under specific timing and deployment conditions, affect files accessible to the Backstage backend. If backend application files are writable, the confidentiality, integrity, and availability of the backend may be compromised. This issue is fixed in versions 3.3.1, 3.4.1, 4.0.3 and 4.1.0.
backstage/plugin-scaffolder-backend < 3.3.1backstage/plugin-scaffolder-backend >= 3.4.0, < 3.4.1backstage/plugin-scaffolder-backend >= 4.0.0, < 4.0.3backstage/plugin-scaffolder-backend >= 4.0.4, < 4.1.0backstage < 1.49.6backstage >= 1.50.0, < 1.50.5backstage >= 1.51.0, < 1.54.6Upgrade past the affected range:
backstage/plugin-scaffolder-backend 4.1.0backstage 1.54.6Affected packages:
@backstage/plugin-scaffolder-backend < 4.1.0Patched in:
@backstage/plugin-scaffolder-backend 4.1.0Source: https://github.com/advisories/GHSA-xvgh-hmx8-9xxf
Connected by shared product, vendor, weakness, or advisory.
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