Improper Repository Path Validation in Backstage Plugin by Spotify
CVE-2026-106560

7.1HIGH

Key Information:

Vendor

Backstage

Status
Backstage
Plugin-scaffolder-backend-module-confluence-to-markdown
Vendor
CVE Published:
7 October 2026

What is CVE-2026-106560?

The Backstage platform's @backstage/plugin-scaffolder-backend-module-confluence-to-markdown package encountered an issue where improper validation of repository paths allowed authenticated users to manipulate file locations. This vulnerability could enable users to generate content that is written to unintended areas outside the task workspace, where the Backstage backend has write permissions. This could lead to unauthorized file access or modifications. The issue was addressed in version 0.3.25, ensuring that repository path validation is properly enforced.

Affected Version(s)

backstage < 1.54.6

plugin-scaffolder-backend-module-confluence-to-markdown < 0.3.25

References

https://github.com/backstage/backstage/security/advisorie...
x_refsource_CONFIRM
https://github.com/backstage/backstage/commit/5f0000c1d0a...
x_refsource_MISC
https://github.com/backstage/backstage/releases/tag/v1.54.6
x_refsource_MISC

CVSS V3.1

Score:
7.1
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.