PT-2026-107280

Name of the Vulnerable Software and Affected Versions Backstage versions prior to 3.9.1 Description The @backstage/plugin-catalog-backend package suffers from inconsistent enforcement of allowed location types during catalog processing. Under specific configurations, the catalog backend may proce...

CVE-2026-106503: Improper Handling of Case Sensitivity

Backstage is an open framework for building developer portals. Prior to 3.3.1, 3.4.1, 4.0.3 and 4.1.0, the @backstage/plugin-scaffolder-backend package is affected by scaffolder action input authorization bypass. An authenticated user with access to affected Scaffolder templates could bypass...

PT-2026-107295

Name of the Vulnerable Software and Affected Versions Backstage versions prior to 3.5.1 Backstage versions prior to 3.6.2 Backstage versions prior to 3.7.2 Backstage versions prior to 3.8.2 Backstage versions prior to 3.9.1 Description The @backstage/plugin-catalog-backend package contains improp...

CVE-2026-106502: Insertion of Sensitive Information into Log File

Backstage is an open framework for building developer portals. Prior to 4.1.0, the @backstage/plugin-scaffolder-backend package could expose sensitive information in Scaffolder task failure events. Under specific template and failure conditions, an authenticated user may retrieve backend-managed...

PT-2026-107297

Name of the Vulnerable Software and Affected Versions Backstage versions prior to 3.3.1 Backstage versions prior to 3.4.1 Backstage versions prior to 4.0.3 Backstage versions prior to 4.1.0 Description The @backstage/plugin-scaffolder-backend package contains improper task state validation within...

PT-2026-107266

Name of the Vulnerable Software and Affected Versions @backstage/plugin-catalog-backend-module-gitlab versions prior to 0.8.7 Description Improper authorization exists during GitLab organizational user ingestion. Deployments that enable GitLab organization event ingestion and use scoped catalog...

PT-2026-107310

Name of the Vulnerable Software and Affected Versions Backstage versions prior to 1.14.6 Description The @backstage/plugin-techdocs-node package fails to properly validate the mkdocs theme configuration. When TechDocs is configured to build documentation locally or within a container, an attacker...

PT-2026-107303

Name of the Vulnerable Software and Affected Versions Backstage versions prior to 4.1.0 Description The @backstage/plugin-scaffolder-backend package contains improper input validation regarding the ordering of scaffolder task lists. An authenticated user with permissions to create and read...

PT-2026-107296

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...

PT-2026-107270

Name of the Vulnerable Software and Affected Versions Backstage versions prior to 2.2.4 Description The @backstage/plugin-techdocs-backend package contains improper authorization enforcement for static content. An authenticated user with access to one TechDocs documentation site can craft a URL t...

PT-2026-107298

Name of the Vulnerable Software and Affected Versions Backstage versions prior to 3.3.1 Backstage versions prior to 3.4.1 Backstage versions prior to 4.0.3 Backstage versions prior to 4.1.0 Description The @backstage/plugin-scaffolder-backend package contains a sensitive information exposure issu...

PT-2026-107244

Name of the Vulnerable Software and Affected Versions @backstage/plugin-techdocs-node versions 0.11.12 through 1.14.6 @backstage/plugin-techdocs-node versions 1.15.0 through 1.15.4 Description Improper validation of mkdocs plugin configuration in techdocs allows an authenticated attacker with...

PT-2026-107281

Name of the Vulnerable Software and Affected Versions Backstage versions prior to 3.9.1 Description The @backstage/plugin-catalog-backend package contains an issue regarding inconsistent catalog property permission evaluation. In environments where value-based catalog permission conditions are us...

CVE-2026-106458: Incorrect Authorization

Backstage is an open framework for building developer portals. From 0.4.0 until 0.5.15, the @backstage/plugin-catalog-backend-module-bitbucket-server package is affected by inconsistent repository filtering in bitbucket server catalog event updates. Deployments using event-driven updates in the...

PT-2026-107300

Name of the Vulnerable Software and Affected Versions Backstage versions prior to 3.3.1 Backstage versions prior to 3.4.1 Backstage versions prior to 4.0.3 Backstage versions prior to 4.1.0 Description The @backstage/plugin-scaffolder-backend package contains an authorization bypass regarding...

PT-2026-107299

Name of the Vulnerable Software and Affected Versions Backstage versions prior to 4.1.0 Description The @backstage/plugin-scaffolder-backend package may expose sensitive information within Scaffolder task failure events. An authenticated user can retrieve backend-managed credentials used during...

PT-2026-107271

Name of the Vulnerable Software and Affected Versions Backstage versions prior to 2.2.4 Description The @backstage/plugin-techdocs-backend package contains improper input validation during static content requests. When the Azure Blob Storage provider is utilized and entity-level permissions are...

PT-2026-107302

Name of the Vulnerable Software and Affected Versions Backstage versions prior to 1.14.6 Backstage versions prior to 1.15.4 Description The @backstage/plugin-techdocs-node package contains a flaw in the techdocs backend that allows a bypass of the mkdocs configuration sanitizer. Users capable of...

CVE-2026-106500: Improper Link Resolution Before File Access

Backstage is an open framework for building developer portals. Prior to 3.3.1, 3.4.1, 4.0.3 and 4.1.0, the @backstage/plugin-scaffolder-backend package is affected by improper task state validation in scaffolder backend. An authenticated user with permission to create and access Scaffolder tasks...

PT-2026-107267

Name of the Vulnerable Software and Affected Versions @backstage/plugin-scaffolder-backend-module-bitbucket-cloud versions prior to 0.3.10 @backstage/plugin-scaffolder-backend-module-bitbucket-server versions prior to 0.2.25 Description Bitbucket pull-request Scaffolder actions fail to sufficient...