CVE-2026-106510 Backstage — Exploit & Vulnerability Details HIGH

Parameter	Value
CVSS	7.7 (HIGH)
Affected Versions	1.15.0 — 1.54.6
Fixed In	1.14.6
Type	CWE-183, CWE-470
Vendor	Backstage
Public PoC	No

Backstage is an open framework for building developer portals. Prior to 1.14.6, the @backstage/plugin-techdocs-node package is affected by remote code execution via crafted markdown_extensions in techdocs mkdocs.yml. An authenticated user who can register catalog entities can provide a crafted mkdocs.yml causing arbitrary OS command execution on the TechDocs build host when the docs are built.

This issue is fixed in versions 1.14.6 and 1.15.4.

Attack Parameters

Attack Vector

Network

Can be exploited remotely

Attack Complexity

High

Difficult to exploit

Privileges Required

Low

Basic privileges needed

User Interaction

None

No user interaction needed

Impact Assessment

Confidentiality

High

Complete data leak

Integrity

Low

Partial data modification

Availability

Low

Partial disruption

CVSS Vector v3.1

Weakness Type (CWE)

CWE-183

CWE-470

Vulnerable Products 9

Configuration	From (including)	Up to (excluding)
Linuxfoundation Backstage_Plugin-Techdocs-Node cpe:2.3:a:linuxfoundation:backstage_plugin-techdocs-node::::::::	—	`1.14.6`
Linuxfoundation Backstage_Plugin-Techdocs-Node cpe:2.3:a:linuxfoundation:backstage_plugin-techdocs-node::::::::	`1.15.0`	`1.15.4`
Linuxfoundation Backstage cpe:2.3:a:linuxfoundation:backstage::::::::	—	`1.50.5`
Linuxfoundation Backstage cpe:2.3:a:linuxfoundation:backstage::::::::	`1.51.1`	`1.54.6`
Linuxfoundation Backstage cpe:2.3:a:linuxfoundation:backstage:1.51.0:-::::::	—	—
Linuxfoundation Backstage cpe:2.3:a:linuxfoundation:backstage:1.51.0:next0::::::	—	—
Linuxfoundation Backstage cpe:2.3:a:linuxfoundation:backstage:1.51.0:next1::::::	—	—
Linuxfoundation Backstage cpe:2.3:a:linuxfoundation:backstage:1.51.0:next2::::::	—	—
Linuxfoundation Backstage cpe:2.3:a:linuxfoundation:backstage:1.51.0:next3::::::	—	—