CVE-2026-106509 Backstage @backstage/plugin-techdocs-node - Command Injection

Backstage @backstage/plugin-techdocs-node < 1.14.6 contains a command injection caused by improper validation of mkdocs theme configuration in techdocs, letting users with write access to a registered repository execute arbitrary code during documentation build, exploit requires write access to repository.

CVSS base score 7.7 /10
High
CISA KEV
Not listed
Public exploit
Proof of concept available
Authentication
Required
EPSS
0.37% 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
6 October 2026
Updated
15 October 2026
Weakness
CWE-94

Vendor fix

Update to versions 1.14.6 or 1.15.4 or later.

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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