Answer in brief
CVE-2026-24046 records a High severity (CVSS 7.1) vulnerability in Backstage has a Possible Symlink Path Traversal in Scaffolder Actions. The current sources do not mark it as known exploited. The current feed maps backstage/backstage (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps backstage/backstage (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| backstage/backstagegeneric | @backstage/backend-defaults < 0.12.2 || @backstage/backend-defaults >= 0.13.0, < 0.13.2 || @backstage/backend-defaults >= 0.14.0, < 0.14.1 || @backstage/plugin-scaffolder-backend < 2.2.2 || @backstage/plugin-scaffolder-backend >= 3.0.0, < 3.0.2 || @backstage/plugin-scaffolder-backend >= 3.1.0, < 3.1.1 || @backstage/plugin-scaffolder-node < 0.11.2 || @backstage/plugin-scaffolder-node >= 0.12.0, < 0.12.3 | Not reported |
Published upstream
Jan 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 15, 2026
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 via the `debug:log` action by creating a symlink pointing to sensitive files (e.g., `/etc/passwd`, configuration files, secrets); delete arbitrary files via the `fs:delete` action by creating symlinks pointing outside the workspace, and write files outside the workspace via archive extraction (tar/zip) containing malicious symlinks. This affects any Backstage deployment where users can create or execute Scaffolder templates. This vulnerability is fixed in `@backstage/backend-defaults` versions 0.12.2, 0.13.2, 0.14.1, and 0.15.0; `@backstage/plugin-scaffolder-backend` versions 2.2.2, 3.0.2, and 3.1.1; and `@backstage/plugin-scaffolder-node` versions 0.11.2 and 0.12.3. Users should upgrade to these versions or later. Some workarounds are available. Follow the recommendation in the Backstage Threat Model to limit access to creating and updating templates, restrict who can create and execute Scaffolder templates using the permissions framework, audit existing templates for symlink usage, and/or run Backstage in a containerized environment with limited filesystem access.
Quoted source text, attributed separately from HOL analysis.
Answer in brief
CVE-2026-24046 records a High severity (CVSS 7.1) vulnerability in Backstage has a Possible Symlink Path Traversal in Scaffolder Actions. The current sources do not mark it as known exploited. The current feed maps backstage/backstage (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps backstage/backstage (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| backstage/backstagegeneric | @backstage/backend-defaults < 0.12.2 || @backstage/backend-defaults >= 0.13.0, < 0.13.2 || @backstage/backend-defaults >= 0.14.0, < 0.14.1 || @backstage/plugin-scaffolder-backend < 2.2.2 || @backstage/plugin-scaffolder-backend >= 3.0.0, < 3.0.2 || @backstage/plugin-scaffolder-backend >= 3.1.0, < 3.1.1 || @backstage/plugin-scaffolder-node < 0.11.2 || @backstage/plugin-scaffolder-node >= 0.12.0, < 0.12.3 | Not reported |
Published upstream
Jan 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 15, 2026
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 via the `debug:log` action by creating a symlink pointing to sensitive files (e.g., `/etc/passwd`, configuration files, secrets); delete arbitrary files via the `fs:delete` action by creating symlinks pointing outside the workspace, and write files outside the workspace via archive extraction (tar/zip) containing malicious symlinks. This affects any Backstage deployment where users can create or execute Scaffolder templates. This vulnerability is fixed in `@backstage/backend-defaults` versions 0.12.2, 0.13.2, 0.14.1, and 0.15.0; `@backstage/plugin-scaffolder-backend` versions 2.2.2, 3.0.2, and 3.1.1; and `@backstage/plugin-scaffolder-node` versions 0.11.2 and 0.12.3. Users should upgrade to these versions or later. Some workarounds are available. Follow the recommendation in the Backstage Threat Model to limit access to creating and updating templates, restrict who can create and execute Scaffolder templates using the permissions framework, audit existing templates for symlink usage, and/or run Backstage in a containerized environment with limited filesystem access.
Quoted source text, attributed separately from HOL analysis.