CVE-2026-106559
Backstage: Improper input validation in Confluence to Markdown scaffolder module
CVSS Score
6.3
EPSS Score
0.0%
EPSS Percentile
0th
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 Markdown scaffolder module could allow an attacker to influence file write operations during template execution. Exploitation requires a Backstage user to run a template that processes attacker-influenced Confluence content. This issue is fixed in version 0.3.25.
| CWE | CWE-22 CWE-73 |
| Vendor | backstage |
| Product | backstage |
| Published | Oct 7, 2026 |
| Last Updated | Oct 7, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
Low
Affected Versions
backstage / backstage
< 1.54.6
@backstage / plugin-scaffolder-backend-module-confluence-to-markdown
< 0.3.25