Auth bypass in Shelf-Nu Shelf.nu
CVE-2026-47697
Shelf is a platform for tracking physical assets. Shelf is multi-tenant; data is isolated per organization (workspace). Prior to version 1.20.2, several endpoints accepted entity IDs from request input and `connect`-ed / read / updated them without verifying the IDs belonged to the caller's organization. An authenticated user in Org A who knew or obtained an ID belonging to Org B could act on Org B's data across organization boundaries (a cross-tenant IDOR). A loader-only restriction on personal-workspace bookings was also bypassable via a crafted POST. Version 1.20.2 patches the issue. No known workarounds are available.
Vulnerability class: Broken Access Control
EPSS: 0.003 (23.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N.
Affected products
- Shelf-nu Shelf.nu — versions < 1.20.2
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM)
Frequently asked questions
- What is CVE-2026-47697?
- CVE-2026-47697 is a high-severity vulnerability in Shelf-Nu Shelf.nu, classified under Incorrect Authorization. CVSS score: 7.1/10. Published 2026-07-21.
- How severe is CVE-2026-47697?
- High severity. CVSS v3 base score is 7.1 out of 10.