CVE-2026-106486

CRITICAL

INFO Priority: 0.04 BB Relevance: 70/100

Published: 2026-10-06 Modified: 2026-10-23 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Interaction Conf. Impact Integ. Impact Scope Change

CVSS Vector Breakdown

AV: Network

AC: Low

PR: Low

UI: None

S: Changed

C: High

I: High

A: High

Description

Backstage is an open framework for building developer portals. Prior to 0.3.10 in @backstage/plugin-scaffolder-backend-module-bitbucket-cloud and 0.2.25 in @backstage/plugin-scaffolder-backend-module-bitbucket-server, the Bitbucket pull-request Scaffolder actions did not sufficiently validate filesystem paths. An authenticated user who can execute an eligible template and influence an allowed Bitbucket repository could affect paths outside the expected working area, potentially compromising backend confidentiality, integrity, or availability. This issue is fixed in @backstage/plugin-scaffolder-backend-module-bitbucket-cloud 0.3.10 and @backstage/plugin-scaffolder-backend-module-bitbucket-server 0.2.25.

Weakness Classification (2)

CWE-22 CWE-59

Affected Software (3)

Vendor	Product	Version
linuxfoundation	backstage	< 1.54.6
linuxfoundation	backstage\/plugin-scaffolder-backend-module-bitbucket-cloud	< 0.3.10
linuxfoundation	backstage\/plugin-scaffolder-backend-module-bitbucket-server	< 0.2.25