CVE-2026-106461

The Backstage open framework for developer portals contains an incorrect authorization vulnerability in the @backstage/plugin-scaffolder-backend package prior to version 4.1.0 . An authenticated internal user can view metadata for scaffolder tasks that fall outside the visibility defined by a dep...

CVE-2026-106459 Backstage: Improper input validation in Sentry scaffolder actions

Backstage is an open framework for building developer portals. From 0.3.0 until 0.3.8, the @backstage/plugin-scaffolder-backend-module-sentry package is affected by improper input validation in sentry scaffolder actions. An authenticated internal user who can execute the affected actions may caus...

CVE-2026-106459

The Backstage framework is affected by an improper input validation vulnerability in the @backstage/plugin-scaffolder-backend-module-sentry package, specifically within sentry scaffolder actions . Versions 0.3.0 through 0.3.8 are impacted. An authenticated internal user capable of executing these...

CVE-2026-106459 Backstage: Improper input validation in Sentry scaffolder actions

Backstage is an open framework for building developer portals. From 0.3.0 until 0.3.8, the @backstage/plugin-scaffolder-backend-module-sentry package is affected by improper input validation in sentry scaffolder actions. An authenticated internal user who can execute the affected actions may caus...

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-2026-107301

Name of the Vulnerable Software and Affected Versions Backstage versions prior to 4.1.0 Description The @backstage/plugin-scaffolder-backend package allows sensitive information exposure within scaffolder task logs. An authenticated user with permissions to create and read scaffolder tasks can...

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-2026-107267

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...

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-2026-107264

Name of the Vulnerable Software and Affected Versions Backstage versions prior to 4.1.0 Description The @backstage/plugin-scaffolder-backend package contains incorrect authorization in the scaffolder task listing. This allows an authenticated internal user to view metadata for scaffolder tasks th...

PT-2026-107248

Name of the Vulnerable Software and Affected Versions @backstage/plugin-scaffolder-backend-module-sentry versions 0.3.0 through 0.3.7 Description Improper input validation in sentry scaffolder actions allows an authenticated internal user to force the backend to contact unintended destinations...

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-2026-107297

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...

CVE-2026-32237

Backstage vulnerability CVE-2026-32237 affects the @backstage/plugin-scaffolder-backend prior to 3.1.5. Authenticated users with permission to run scaffolder dry-runs can access server-configured environment secrets via the dry-run API response; secrets are redacted in logs but not in all respons...

CVE-2026-32237: Exposure of Sensitive Information to an Unauthorized Actor

Backstage is an open framework for building developer portals. Prior to 3.1.5, authenticated users with permission to execute scaffolder dry-runs can gain access to server-configured environment secrets through the dry-run API response. Secrets are properly redacted in log output but not in all...

CVE-2026-24046: Improper Limitation of a Pathname to a Restricted Directory

Backstage is an open framework for building developer portals. Multiple Scaffolder actions and archive extraction utilities were vulnerable to symlink-based path traversal attacks. An attacker with access to create and execute Scaffolder templates could exploit symlinks to read arbitrary files vi...

CVE-2025-55285: Insertion of Sensitive Information into Log File

@backstage/plugin-scaffolder-backend is the backend for the default Backstage software templates. Prior to version 2.1.1, duplicate logging of the input values in the fetch:template action in the Scaffolder meant that some of the secrets were not properly redacted. If $ secrets.x is not passed...

Arbitrary Code Injection

@backstage/plugin-scaffolder-backend is vulnerable to Arbitrary Code Injection. The vulnerability exists due to sandbox bypass in ScaffolderEntitiesProcessor.js, which allows an attacker with write access to a registered scaffolder template to inject code through the YAML template definition...

CVE-2023-35926

Backstage is an open platform for building developer portals. The Backstage scaffolder-backend plugin uses a templating library that requires sandbox, as it by design allows for code injection. The library used for this sandbox so far has been vm2, but in light of several past vulnerabilities and...