---
id: CVE-2026-54166
title: Shelf is a platform for tracking physical assets
summary: >-
  Shelf is a platform for tracking physical assets. Prior to version 1.20.3,
  authenticated users with the `asset:import` permission can trigger server-side
  HTTP requests to attacker-controlled URLs through the Asset CSV Content Import
  feat…
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L'
cwe:
  - CWE-918
vendor: Shelf-nu
product: shelf.nu
affected:
  - shelf.nu < 1.20.3
published: '2026-09-11'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T19:17:28.690'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-54166'
references:
  - url: >-
      https://github.com/Shelf-nu/shelf.nu/security/advisories/GHSA-xgrm-8w6v-mvjg
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
epss: 0.00253
epssPercentile: 0.17114
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-14T18:37:46.799023Z'
ingestedAt: '2026-09-14T11:11:19.878Z'
---

## Overview

Shelf is a platform for tracking physical assets. Prior to version 1.20.3, authenticated users with the `asset:import` permission can trigger server-side HTTP requests to attacker-controlled URLs through the Asset CSV Content Import feature. The `imageUrl` validation logic can be bypassed through multiple techniques, including image-extension suffixes, image-related path keywords, domain substring matching, and redirect chains. After validation, the server performs an unrestricted `fetch()` request to the supplied URL. This results in a Server-Side Request Forgery (SSRF) vulnerability that allows attackers to reach internal network services, cloud metadata endpoints, and arbitrary external hosts from the application's network context. Additionally, response bodies are fully buffered before size validation, creating a potential memory exhaustion vector. Version 1.20.3 patches the issue.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.