CVE-2026-55643 Snipe-IT: Tenant Isolation Bypass in FMCS Floater Mode
Attackers in FMCS floater mode can bypass tenant isolation to read and modify out-of-scope user data and assets.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-55643?
CVE-2026-55643 is a high-severity missing authorization vulnerability in Snipeitapp Snipe-It, published on 19 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Snipe-IT is an IT asset/license management system. Prior to 8.6.3, a company-scoped user in FMCS floater mode can access users whose company_id is null because broad API queries and bulk web actions do not consistently apply isCurrentUserHasAccess. The /api/v1/users and /api/v1/users/{id}/licenses endpoints can expose personal data and assigned licenses, /users/bulkeditsave can modify out-of-scope profiles, and /users/merge can soft-delete users and transfer assigned assets. This issue is fixed in version 8.6.3.
Weakness: CWE-863
Which versions are affected by CVE-2026-55643?
2 open source packages ship an affected version, including snipe/snipe-it. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
snipe/snipe-it Packagist | All versions | 8.6.3 |
snipe/snipe-it Packagist | All versions | 8.6.3 |
Products include Snipeitapp Snipe-It.
How do I fix CVE-2026-55643?
Upgrade snipe/snipe-it to 8.6.3 or later.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-55643 being exploited?
There is no known exploitation of CVE-2026-55643 in the wild and no public exploit code.
Other vulnerabilities in Snipeitapp Snipe-It
- CVE-2025-63601 File upload in n/a
- CVE-2026-37709 Snipe-IT has insecure permissions in file uploads
- CVE-2026-86738 Snipe-IT before 8.7.0 CSS Injection via Custom CSS
- CVE-2026-116199 Snipe-IT before 8.6.3 Authentication Bypass via Google SSO Callback
- CVE-2022-1380 Stored Cross Site Scripting vulnerability in Item name parameter in snipe/snipe-it
Sources
Also known as GHSA-c6w2-j4wq-mvwg.