Detections
Analytics

SCA: security update for @backstage/plugin-catalog-backend (GHSA-qgvj-qcf8-xq73)

high Tenable Self-Hosted Container Security Plugin ID 473686

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 3.5.1, 3.6.2, 3.7.2, 3.8.2 and
 3.9.1, the @backstage/plugin-catalog-backend package is affected by improper url validation in catalog
 entity placeholder resolution. An authenticated Backstage user could craft a catalog entity with
 placeholder directives that reference resources outside the entity's source repository. Under certain
 configurations, this could allow access to data not intended to be available to the user. This issue is
 fixed in versions 3.5.1, 3.6.2, 3.7.2, 3.8.2 and 3.9.1. (CVE-2026-106498)

Solution

Update the @backstage/plugin-catalog-backend library and its related packages to version 3.9.1 or later.

See Also

https://github.com/advisories/GHSA-qgvj-qcf8-xq73

Plugin Details

Severity: High

ID: 473686

Version: Revision 1.1

Type: Local

Family: SCA Checks

Published: 10/7/2026

Updated: 10/7/2026

Risk Information

VPR

Risk Factor: Low

Score: 3.3

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-2026-106498

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-2026-106498