CVE-2026-106498

HighCVSS 7.7/10Last modified Oct 16, 2026

Description

Backstage is an open framework for building developer portals. Prior to 3.5.1, 3.6.2, 3.7.2, 3.8.2 and 3.9.1, the @backstage/plugin-catalog-backend package is affected by improper url validation in catalog entity placeholder resolution. An authenticated Backstage user could craft a catalog entity with placeholder directives that reference resources outside the entity's source repository. Under certain configurations, this could allow access to data not intended to be available to the user. This issue is fixed in versions 3.5.1, 3.6.2, 3.7.2, 3.8.2 and 3.9.1.

Metrics

CVSS 3.1 7.7/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Weakness enumeration

CWE-863CWE-918

Affected software

No affected versions have been published.

Timeline

Published
Oct 6, 2026
Last modified
Oct 16, 2026
NVD status
Analyzed

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CVE-2026-106498: High severity, CVSS 7.7 | Vulnix