CVE-2026-106510 Backstage @backstage/plugin-techdocs-node - Remote Code Execution

Backstage @backstage/plugin-techdocs-node < 1.14.6 contains a remote code execution caused by crafted markdown_extensions in techdocs mkdocs.yml, letting authenticated users who can register catalog entities execute arbitrary OS commands on the TechDocs build host, exploit requires authenticated user with catalog entity registration rights.

CVSS base score 7.7 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.45% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Remote Code Execution
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-183

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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