Detections
Analytics

SCA: security update for @backstage/plugin-scaffolder-backend (GHSA-xvgh-hmx8-9xxf)

high Tenable Cloud Security Plugin ID 473657

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 3.3.1, 3.4.1, 4.0.3 and 4.1.0, the
 @backstage/plugin-scaffolder-backend package is affected by improper task state validation in scaffolder
 backend. An authenticated user with permission to create and access Scaffolder tasks may, under specific
 timing and deployment conditions, affect files accessible to the Backstage backend. If backend application
 files are writable, the confidentiality, integrity, and availability of the backend may be compromised.
 This issue is fixed in versions 3.3.1, 3.4.1, 4.0.3 and 4.1.0. (CVE-2026-106500)

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-xvgh-hmx8-9xxf

Plugin Details

Severity: High

ID: 473657

Version: Revision 1.1

Type: Local

Family: SCA Checks

Published: 10/7/2026

Updated: 10/7/2026

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 93.17

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 7.1

Temporal Score: 5.3

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

CVSS Score Source: CVE-2026-106500

CVSS v3

Risk Factor: High

Base Score: 8.5

Temporal Score: 7.4

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

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-2026-106500