PT-2026-107296 · Backstage · Backstage

CVE-2026-106499

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Published

2026-10-06

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Updated

2026-10-06

CVSS v3.1

4.9

Medium

VectorAV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Name of the Vulnerable Software and Affected Versions Backstage versions prior to 4.1.0
Description The @backstage/plugin-scaffolder-backend package may expose secret-derived values within Scaffolder task logs. This occurs in deployments where sensitive scaffolder.defaultEnvironment.secrets are configured and users are permitted to create or modify Scaffolder templates. A template author can cause these secret-derived values, used during template iteration, to be persisted and visible to any user with access to the task logs.
Recommendations Update to version 4.1.0.

Exploit

Fix

Insertion into Log File

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Weakness Enumeration

Related Identifiers

CVE-2026-106499
GHSA-MFVQ-X7VR-RGQG

Affected Products

Backstage