CVE-2026-106500

A flaw was found in @backstage/plugin-scaffolder-backend. Due to improper task state validation, an authenticated user with permissions to create and access Scaffolder tasks can affect files accessible to the Backstage backend under specific timing and deployment conditions. If the backend...

CVE-2026-106492

A flaw was found in @backstage/backend-defaults. The package fails to properly preserve access restrictions during service credential delegation when requests are routed through plugin delegation paths. An authenticated service with limited privileges can exploit this issue to bypass access...

CVE-2026-106493

A flaw was found in Backstage. Cloud storage catalog providers do not sufficiently validate object paths. An attacker with permissions to create or rename objects in a configured cloud storage source, such as Amazon Web Services AWS S3 or Azure Blob Storage, can cause catalog descriptors to be re...

PT-2026-107532

Backstage is an open framework for building developer portals. Prior to 1.14.6, the @backstage/plugin-techdocs-node package is affected by configuration bypass in techdocs mkdocs.yml sanitization. Insufficient validation of MkDocs configuration during TechDocs generation could allow an...

PT-2026-107544

Name of the Vulnerable Software and Affected Versions @backstage/plugin-search-backend versions prior to 2.1.6 @backstage/plugin-search-backend-module-elasticsearch versions prior to 1.8.7 Description An authenticated user could receive unauthorized search results when a DENY policy is applied to...

CVE-2026-106563: Improper Input Validation

Backstage is an open framework for building developer portals. Prior to 0.21.8, the @backstage/plugin-kubernetes-backend package is affected by improper entity validation in deprecated kubernetes services endpoint. An authenticated user with Kubernetes read permissions could access Kubernetes...

CVE-2026-106562: Improper Check for Unusual or Exceptional Conditions

Backstage is an open framework for building developer portals. Prior to 2.1.6 in @backstage/plugin-search-backend and 1.8.7 in @backstage/plugin-search-backend-module-elasticsearch, search engine permission filtering could return documents denied by policy. An authenticated Backstage user subject...

CVE-2026-106561: Exposure of Sensitive Information to an Unauthorized Actor

Backstage is an open framework for building developer portals. Prior to 0.21.9, the @backstage/plugin-kubernetes-backend package is affected by sensitive information disclosure in kubernetes resource queries. An authenticated user holding the standard Kubernetes resource read permission could...

CVE-2026-106560: Improper Limitation of a Pathname to a Restricted Directory

Backstage is an open framework for building developer portals. Prior to 0.3.25, the @backstage/plugin-scaffolder-backend-module-confluence-to-markdown package is affected by improper repository path validation in a scaffolder backend module. An authenticated user who can execute an affected...

CVE-2026-106558: Deserialization of Untrusted Data

Backstage is an open framework for building developer portals. Prior to 1.14.8, 1.15.6, and 2.0.1, the @backstage/plugin-techdocs-node package improperly validated mapping-style markdownextensions configuration. An authenticated attacker who can register or influence an SCM-backed documentation...

CVE-2026-106556: Improper Neutralization of Special Elements used in an OS Command

Backstage is an open framework for building developer portals. Prior to 1.14.6, the @backstage/plugin-techdocs-node package is affected by configuration bypass in techdocs mkdocs.yml sanitization. Insufficient validation of MkDocs configuration during TechDocs generation could allow an...

CVE-2026-106559: Improper Limitation of a Pathname to a Restricted Directory

Backstage is an open framework for building developer portals. Prior to 0.3.25, the @backstage/plugin-scaffolder-backend-module-confluence-to-markdown package is affected by improper input validation in confluence to markdown scaffolder module. Insufficient input validation in the Confluence to...

CVE-2026-106510: Permissive List of Allowed Inputs

Backstage is an open framework for building developer portals. Prior to 1.14.6, the @backstage/plugin-techdocs-node package is affected by remote code execution via crafted markdownextensions in techdocs mkdocs.yml. An authenticated user who can register catalog entities can provide a crafted...

CVE-2026-106557: Improper Limitation of a Pathname to a Restricted Directory

Backstage is an open framework for building developer portals. Prior to 1.14.6 and 1.15.4, the @backstage/plugin-techdocs-node package did not sufficiently validate TechDocs Markdown extension configuration. An authenticated user who can register or modify documentation sources may cause a TechDo...

PT-2026-107542

Name of the Vulnerable Software and Affected Versions @backstage/plugin-scaffolder-backend-module-confluence-to-markdown versions prior to 0.3.25 Description Improper repository path validation in a scaffolder backend module allows an authenticated user who can execute an affected template and...

PT-2026-107582

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 fails to sufficiently validate TechDocs Markdown extension configuration. An authenticated user with permissions to...

PT-2026-107534

Name of the Vulnerable Software and Affected Versions @backstage/plugin-scaffolder-backend-module-confluence-to-markdown versions prior to 0.3.25 Description Improper input validation in the Confluence to Markdown scaffolder module allows an attacker to influence file write operations during...

PT-2026-107533

Name of the Vulnerable Software and Affected Versions @backstage/plugin-techdocs-node versions prior to 1.14.8 @backstage/plugin-techdocs-node versions prior to 1.15.6 @backstage/plugin-techdocs-node versions prior to 2.0.1 Description The @backstage/plugin-techdocs-node package improperly...

PT-2026-107543

Name of the Vulnerable Software and Affected Versions @backstage/plugin-kubernetes-backend versions prior to 0.21.9 Description An authenticated user with standard Kubernetes resource read permissions can retrieve sensitive values that the plugin is intended to mask. This may expose credentials a...

PT-2026-107545

Name of the Vulnerable Software and Affected Versions @backstage/plugin-kubernetes-backend versions prior to 0.21.8 Description Improper entity validation in a deprecated Kubernetes services endpoint allows an authenticated user with Kubernetes read permissions to access workload data beyond thei...