SCA: security update for @backstage/plugin-techdocs-node (GHSA-q38j-6vcm-2f5m)

high Tenable Self-Hosted Container Security Plugin ID 473803

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. From 0.11.12 until 1.14.7 and 1.15.5, the
@backstage/plugin-techdocs-node package is affected by improper validation of mkdocs plugin configuration
in techdocs. An authenticated attacker with control over a TechDocs source repository could cause a
documentation build to retrieve and publish data from network locations reachable by the build
environment. Exposure depends on deployment topology, build mode, and target endpoint protections. Modern
cloud metadata services that require tokens or special headers are not directly accessible through the
affected behavior. This issue is fixed in @backstage/plugin-techdocs-node versions 1.14.7 and 1.15.5.
(CVE-2026-106455)

Solution

Update the @backstage/plugin-techdocs-node library and its related packages to version 1.14.7 or later.

See Also

https://github.com/advisories/GHSA-q38j-6vcm-2f5m

Plugin Details

Severity: High

ID: 473803

Version: Revision 1.1

Type: Local

Family: SCA Checks

Published: 10/8/2026

Updated: 10/8/2026

Risk Information

VPR

Risk Factor: Low

Score: 3.3

Percentile: 50.58

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2026-106455

CVSS v3

Risk Factor: High

Base Score: 7.7

Temporal Score: 6.7

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

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

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 10/7/2026

Vulnerability Publication Date: 10/6/2026

Reference Information

CVE: CVE-2026-106455

cwe: CWE-918