HIGHpublic-safe

CVE-2026-106558

NVD: Backstage is an open framework for building developer portals. NVD: Prior to 1.14.8, 1.15.6, and 2.0.1, the @backstage/plugin-techdocs-node package improperly validated mapping-style markdown_extensions configuration. NVD: An authenticated attacker who can register or influence an SCM-backed documentation source may bypass TechDocs sanitization and cause Python objects to be imported and instantiated in the generator runtime, leading to arbitrary code execution.

CVSS
8.8 Severity
HIGH EPSS
0.0047 (39) KEV
-

Source-published summary

Possible impact

Source describes code execution review · authenticated boundary. Possible impact: An attacker may be able to run code or commands on affected systems.

Affected context

vendor/product: linuxfoundation / backstage_plugin-techdocs-node; affected version context: 1.51.0, 1.55.0

Remediation / advisory

Patch confirmed by source text; fixed version context: versions.

Why it matters

Source describes code execution review · authenticated boundary. Possible impact: An attacker may be able to run code or commands on affected systems.; CVSS 8.8 (HIGH); EPSS percentile 39; not listed in KEV; Patch confirmed by source text; fixed version context: versions; sources: NVD, OSV, Vendor Advisory.

What to verify

Confirm affected product/version, vendor advisory, patch or mitigation, and exposure.

Exposure hint

authenticated boundary

Impact tags

code execution reviewauthenticated boundary review

Urgency reasons

CVSS HIGHaffected product presentvendor advisory presentrecent updateremediation reference present

Source-derived note

Summary derived from NVD / OSV / Vendor Advisory description; unsafe procedural detail is not shown.

Redaction metadata

source summary used: True
fallback summary used: False
unsafe procedural detail present: false
raw source displayed: false
public summary redacted: true

Remediation handoff

Public-safe static handoff for human/Codex remediation planning. Scan, patch, external execution, and auto remediation are disabled.

Handoff JSON Handoff Markdown Safe Codex prompt

Safety note

This radar shows source-published defensive context only. Exploit procedures, exploit strings, scanner commands, and auto-remediation are not provided.