Path Traversal in Backstage
CVE-2026-106560
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 template and control its repository file location may cause generated content to be written outside the task workspace, within locations writable by the Backstage backend process. This issue is fixed in version 0.3.25.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Backstage — versions < 1.54.6
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-106560?
- CVE-2026-106560 is a high-severity vulnerability in Backstage, classified under Path Traversal. CVSS score: 7.1/10. Published 2026-10-07.
- How severe is CVE-2026-106560?
- High severity. CVSS v3 base score is 7.1 out of 10.