CVE-2026-106501Critical· 9.6▾ MidnightBackstage 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 sensitive information exposure in scaffolder. An authenticated Backsta…
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 52.8 · 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 7.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.5%
Last analysed / modified upstream
0.5% → 0.5%
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 sensitive information exposure in scaffolder. An authenticated Backstage user who can read another user's Scaffolder task may receive internal execution data. In deployments where that data contains credentials for an external service, this may permit disclosure and unauthorized changes in that external service. 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 < 3.3.1@backstage/plugin-scaffolder-backend >= 3.4.0, < 3.4.1@backstage/plugin-scaffolder-backend >= 4.0.0, < 4.0.3@backstage/plugin-scaffolder-backend >= 4.0.4, < 4.1.0Patched in:
@backstage/plugin-scaffolder-backend 3.3.1@backstage/plugin-scaffolder-backend 3.4.1@backstage/plugin-scaffolder-backend 4.0.3@backstage/plugin-scaffolder-backend 4.1.0Source: https://github.com/advisories/GHSA-g2v8-7jhw-pp8p
Connected by shared product, vendor, weakness, or advisory.
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