CVE WatchOct 9, 2026

CVE-2026-106506

Backstage is an open framework for building developer portals. Prior to 4.1.0, the @backstage/plugin-scaffolder-backend package is affected

CVSS

5.3

Medium

EPSS

0.2%

p11

KEV

—

Exploit Today

0-100

Published: Oct 6, 2026 · Last modified: Oct 9, 2026 · CWE-202 · CWE-203

EPSS · 30d

0.2%EPSS · 30 days0.2%

2026-10-072026-10-20

Technical description

Backstage is an open framework for building developer portals. Prior to 4.1.0, the @backstage/plugin-scaffolder-backend package is affected by improper input validation in scaffolder task list ordering. An authenticated Backstage user with permission to create and read relevant scaffolder tasks may be able to infer confidential task data under specific conditions. Successful exploitation requires retained task secrets, visibility of a target task, knowledge of the secret structure, and repeated requests. This issue is fixed in version 4.1.0.

Official references

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