Backstage: Improper repository path validation in a Scaffolder backend module

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-106560
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-07 15:17:17 UTC
Updated2026-10-07 15:52:18 UTC
DescriptionBackstage 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.

Risk And Classification

Primary CVSS: v3.1 7.1 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L

Problem Types: CWE-22 | CWE-22 CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.1HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
3.1CNADECLARED7.1HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Backstage Backstage affected < 1.54.6 Not specified
CNA @backstage Plugin-scaffolder-backend-module-confluence-to-markdown affected < 0.3.25 Not specified

References

ReferenceSourceLinkTags
github.com/backstage/backstage/commit/5f0000c1d0af05571e357926b3fa33a453... [email protected] github.com
github.com/backstage/backstage/security/advisories/GHSA-2cmg-v53w-8xfp [email protected] github.com
github.com/backstage/backstage/releases/tag/v1.54.6 [email protected] github.com
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