CVE-2026-106498: backstage < 1.49.6, >= 1.50.0-next.0, < 1.50.5, >= 1.51.0-next.0, < 1.51.3, >= 1.52.0-next.0, < 1.53.2, >=…

Affected technology

backstage · < 1.49.6, >= 1.50.0-next.0, < 1.50.5, >= 1.51.0-next.0, < 1.51.3, >= 1.52.0-next.0, < 1.53.2, >= 1.54.0-next.0, < 1.54.6
backstage

plugin-catalog-backend · < 3.5.1, >= 3.6.0, < 3.6.2, >= 3.7.0, < 3.7.2, >= 3.8.0, < 3.8.2, >= 3.9.0, < 3.9.1
@backstage

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · Low privileges required · No user interaction required

What an attacker can do

An authenticated Backstage user could craft a catalog entity with placeholder directives that reference resources outside the entity's source repository. Vendor/CNA’s CVSS 3.1 assessment (base score 7.7/10) rates confidentiality impact as high; integrity and availability impact as none.