Detections
Analytics

SCA: security update for @backstage/plugin-techdocs-node (GHSA-8w7q-29mw-gf5c)

high Tenable Self-Hosted Container Security Plugin ID 473708

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - Backstage is an open framework for building developer portals. Prior to 1.14.6, the @backstage/plugin-
 techdocs-node package is affected by improper validation of mkdocs theme configuration in techdocs. When
 TechDocs is configured to build documentation locally or in a container, a user with write access to a
 registered repository can include configuration values in mkdocs.yml that cause arbitrary code execution
 during the documentation build process. This issue is fixed in versions 1.14.6 and 1.15.4.
 (CVE-2026-106509)

Solution

Update the @backstage/plugin-techdocs-node library and its related packages to version 1.15.4 or later.

See Also

https://github.com/advisories/GHSA-8w7q-29mw-gf5c

Plugin Details

Severity: High

ID: 473708

Version: Revision 1.2

Type: Local

Family: SCA Checks

Published: 10/7/2026

Updated: 10/12/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.39

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 7

Vector: CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2026-106509

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.9

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/7/2026

Vulnerability Publication Date: 10/6/2026

Reference Information

CVE: CVE-2026-106509