| Affected_by_vulnerabilities |
| 0 |
| url |
VCID-27q8-3zw1-8fb3 |
| vulnerability_id |
VCID-27q8-3zw1-8fb3 |
| summary |
Backstage is an open framework for building developer portals, and @backstage/backend-defaults provides the default implementations and setup for a standard Backstage backend app. Prior to versions 0.12.2, 0.13.2, 0.14.1, and 0.15.0, the `FetchUrlReader` component, used by the catalog and other plugins to fetch content from URLs, followed HTTP redirects automatically. This allowed an attacker who controls a host listed in `backend.reading.allow` to redirect requests to internal or sensitive URLs that are not on the allowlist, bypassing the URL allowlist security control. This is a Server-Side Request Forgery (SSRF) vulnerability that could allow access to internal resources, but it does not allow attackers to include additional request headers. This vulnerability is fixed in `@backstage/backend-defaults` version 0.12.2, 0.13.2, 0.14.1, and 0.15.0. Users should upgrade to this version or later. Some workarounds are available. Restrict `backend.reading.allow` to only trusted hosts that you control and that do not issue redirects, ensure allowed hosts do not have open redirect vulnerabilities, and/or use network-level controls to block access from Backstage to sensitive internal endpoints. |
| references |
|
| fixed_packages |
|
| aliases |
CVE-2026-24048, GHSA-q2x5-4xjx-c6p9
|
| risk_score |
1.6 |
| exploitability |
0.5 |
| weighted_severity |
3.1 |
| resource_url |
http://public2.vulnerablecode.io/vulnerabilities/VCID-27q8-3zw1-8fb3 |
|
| 1 |
| url |
VCID-t9gj-dq52-a3a3 |
| vulnerability_id |
VCID-t9gj-dq52-a3a3 |
| summary |
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. |
| references |
| 0 |
|
| 1 |
| reference_url |
https://api.first.org/data/v1/epss?cve=CVE-2026-24046 |
| reference_id |
|
| reference_type |
|
| scores |
| 0 |
| value |
0.00022 |
| scoring_system |
epss |
| scoring_elements |
0.06344 |
| published_at |
2026-06-14T12:55:00Z |
|
| 1 |
| value |
0.00022 |
| scoring_system |
epss |
| scoring_elements |
0.06365 |
| published_at |
2026-06-13T12:55:00Z |
|
| 2 |
| value |
0.00022 |
| scoring_system |
epss |
| scoring_elements |
0.06376 |
| published_at |
2026-06-12T12:55:00Z |
|
| 3 |
| value |
0.00022 |
| scoring_system |
epss |
| scoring_elements |
0.06357 |
| published_at |
2026-06-11T12:55:00Z |
|
|
| url |
https://api.first.org/data/v1/epss?cve=CVE-2026-24046 |
|
| 2 |
|
| 3 |
|
| 4 |
|
| 5 |
|
| 6 |
|
| 7 |
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| 8 |
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| 9 |
|
|
| fixed_packages |
|
| aliases |
CVE-2026-24046, GHSA-rq6q-wr2q-7pgp
|
| risk_score |
4.1 |
| exploitability |
0.5 |
| weighted_severity |
8.2 |
| resource_url |
http://public2.vulnerablecode.io/vulnerabilities/VCID-t9gj-dq52-a3a3 |
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