CVE-2026-106556 Backstage @backstage/plugin-techdocs-node - Command Injection

Backstage @backstage/plugin-techdocs-node < 1.14.6 contains a command injection caused by insufficient validation of MkDocs configuration in techdocs mkdocs.yml sanitization, letting authenticated users who can register or modify documentation sources execute arbitrary commands in the build environment.

CVSS base score 7.7 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.26% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Command Injection
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L
Published
7 October 2026
Updated
15 October 2026
Weakness
CWE-78

Vendor fix

Update to version 1.14.6 or 1.15.4.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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