P4Verified

CVE-2026-106491: backstage < 1.54.6; +1 more affected products

CVE-2026-106491. CVSS 3.1 base score 6.4 (MEDIUM, Vendor/CNA).

Affected technology

backstage · < 1.54.6
backstage

plugin-proxy-backend · < 0.6.17
@backstage

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 3.1): Network (remote) · Low privileges required · No user interaction required

What an attacker can do

An authenticated Backstage user could craft a request URL that causes the proxy-backend to forward the request to a path outside the configured base path on the target server. Vendor/CNA’s CVSS 3.1 assessment (base score 6.4/10) rates confidentiality and integrity impact as low; availability impact as none.

Published 2026-10-07 02:35:18.995743+00:00

CWE: CWE-20, CWE-22
CCR priority: 25.6 /100 (P4)
CVSS 3.1: 6.4 /10 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N · Vendor/CNA
KEV: no

Provenance

NVD CVE API 2.0 · Source record · observed 2026-10-07 02:34:12.333111+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-106491.html