Detections
Analytics

SCA: security update for @backstage/plugin-scaffolder-backend (GHSA-mfvq-x7vr-rgqg)

medium Tenable Cloud Security Plugin ID 473683

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 4.1.0, the @backstage/plugin-
 scaffolder-backend package could expose secret-derived values in Scaffolder task logs. Deployments that
 configure sensitive scaffolder.defaultEnvironment.secrets and allow an attacker to create or modify
 Scaffolder templates are affected. A template author could cause secret-derived values used during
 template iteration to be persisted and exposed to users who can access the resulting task logs. This issue
 is fixed in version 4.1.0. (CVE-2026-106499)

Solution

Update the @backstage/plugin-scaffolder-backend library and its related packages to version 4.1.0 or later.

See Also

https://github.com/advisories/GHSA-mfvq-x7vr-rgqg

Plugin Details

Severity: Medium

ID: 473683

Version: Revision 1.1

Type: Local

Family: SCA Checks

Published: 10/7/2026

Updated: 10/7/2026

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.67

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 4.5

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

CVSS Score Source: CVE-2026-106499

CVSS v3

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 4.3

Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/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-2026-106499

cwe: CWE-532