CVE-2026-88064 Backstage @backstage/plugin-techdocs-node - Remote Code Execution

Backstage @backstage/plugin-techdocs-node < 1.14.6 and 1.15.0 to < 1.15.4 contains a remote code execution caused by insufficient validation of mkdocs.yml by authenticated users who can register or modify TechDocs sources, letting attackers execute code within the TechDocs backend or build container, exploit requires authenticated user with TechDocs source modification privileges.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
1.15% 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:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Published
16 September 2026
Updated
15 October 2026
Weakness
CWE-20

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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