CVE-2026-106505
Published:October 06, 2026
Updated:October 13, 2026
Backstage is an open framework for building developer portals. Prior to 1.14.6 and 1.15.4, the @backstage/plugin-techdocs-node package is affected by bypass of mkdocs configuration sanitizer in techdocs backend. Users with the ability to commit changes to a repository that uses TechDocs can circumvent the MkDocs configuration file sanitizer introduced in response to CVE-2026-25153 and execute arbitrary code on the TechDocs backend host during documentation generation. This issue is fixed in versions 1.14.6 and 1.15.4.
Affected Packages
https://github.com/backstage/backstage.git (GITHUB):
Affected version(s) >=v1.51.0 <v1.54.6Fix Suggestion:
Update to version v1.54.6https://github.com/backstage/backstage.git (GITHUB):
Affected version(s) >=v1.0.0 <v1.50.5Fix Suggestion:
Update to version v1.50.5@backstage/plugin-techdocs-node (NPM):
Affected version(s) >=1.0.0 <1.14.6Fix Suggestion:
Update to version 1.14.6@backstage/plugin-techdocs-node (NPM):
Affected version(s) >=1.15.0 <1.15.4Fix Suggestion:
Update to version 1.15.4@backstage/plugin-techdocs-node (NPM):
Affected version(s) >=0.0.0-nightly-20220305022735 <1.15.4Fix Suggestion:
Update to version 1.15.4Related Resources (8)
Do you need more information?
Contact UsCVSS v4
Base Score:
7.2
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
LOW
Vulnerable System Availability
LOW
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
LOW
Subsequent System Availability
LOW
CVSS v3
Base Score:
7.7
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
LOW
Availability
LOW
EPSS
Base Score:
0.31