SCA: security update for @backstage/plugin-catalog-backend (GHSA-pcmq-25r3-5w9v)

low Tenable Cloud Security Plugin ID 473679

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 3.9.1, the @backstage/plugin-
catalog-backend package is affected by inconsistent enforcement of allowed location types during catalog
processing. Under certain configurations, the catalog backend could process location types that were not
intended to be allowed, potentially leading to unintended file access on the backend host. This issue is
fixed in version 3.9.1. (CVE-2026-106496)

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-pcmq-25r3-5w9v

Plugin Details

Severity: Low

ID: 473679

Version: Revision 1.1

Type: Local

Family: SCA Checks

Published: 10/7/2026

Updated: 10/7/2026

Risk Information

VPR

Risk Factor: Low

Score: 1.2

Percentile: 0.01

Vendor

Vendor Severity: Low

CVSS v2

Risk Factor: Low

Base Score: 2.1

Temporal Score: 1.6

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

CVSS Score Source: CVE-2026-106496

CVSS v3

Risk Factor: Low

Base Score: 3.1

Temporal Score: 2.7

Vector: CVSS:3.0/AV:N/AC:H/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: 10/7/2026

Vulnerability Publication Date: 10/6/2026

Reference Information

CVE: CVE-2026-106496