Detections
Analytics

SCA: security update for @backstage/backend-defaults (GHSA-3xr5-8w6c-p5gw)

medium Tenable Self-Hosted Container Security Plugin ID 474683

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 0.17.8, the @backstage/backend-
 defaults package is affected by improper access control in backend action invocation. An authenticated
 user could invoke actions that an operator had excluded through action configuration. Existing action
 permissions and downstream authorization remain enforced. This issue is fixed in version 0.17.8.
 (CVE-2026-106495)

Solution

Update the @backstage/backend-defaults library and its related packages to version 0.17.8 or later.

See Also

https://github.com/advisories/GHSA-3xr5-8w6c-p5gw

Plugin Details

Severity: Medium

ID: 474683

Version: Revision 1.1

Type: Local

Family: SCA Checks

Published: 10/16/2026

Updated: 10/16/2026

Risk Information

VPR

Risk Factor: Low

Score: 1.2

Percentile: 0.01

Vendor

Vendor Severity: Medium

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

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

CVSS Score Source: CVE-2026-106495

CVSS v3

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.8

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/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: 10/15/2026

Vulnerability Publication Date: 10/12/2026

Reference Information

CVE: CVE-2026-106495

cwe: CWE-284