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Snipe-IT CVE-2026-55643

| EUVDEUVD-2026-62628 HIGH
Incorrect Authorization (CWE-863)
2026-08-19 GitHub_M GHSA-c6w2-j4wq-mvwg
Authentication Bypass Snipe It
7.6
CVSS 4.0 · Vendor: GitHub_M
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Severity by source

Vendor (GitHub_M) PRIMARY
7.6 HIGH
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
vuln.today AI
7.1 HIGH

PR:L for required authenticated company-scoped account; AC:H because FMCS floater mode must be non-default-enabled; high C/I from cross-tenant PII read and user record modification; A:L for soft-deletion impact.

3.1 AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L
4.0 AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N

Primary rating from Vendor (GitHub_M).

CVSS VectorVendor: GitHub_M

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
X

Lifecycle Timeline

4
Patch available
Aug 19, 2026 - 19:18 EUVD
Source Code Evidence Fetched
Aug 19, 2026 - 19:07 vuln.today
Analysis Generated
Aug 19, 2026 - 19:07 vuln.today
CVE Published
Aug 19, 2026 - 18:25 cve.org
HIGH 7.6

DescriptionCVE.org

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.

AnalysisAI

Incorrect authorization in Snipe-IT prior to 8.6.3 allows company-scoped authenticated users operating in FMCS floater mode to cross multi-tenancy boundaries and access, modify, or merge user records associated with no company (null company_id). Affected API endpoints expose cross-tenant personal data and license assignments while bulk edit and merge actions permit unauthorized profile modification and soft-deletion with asset transfer. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Authenticate with company-scoped account or API token
Delivery
Confirm FMCS floater mode is active on target instance
Exploit
Query /api/v1/users to enumerate null-company users across tenant boundary
Execution
Extract PII and license data via /api/v1/users/{id}/licenses
Persist
Invoke /users/bulkeditsave to modify out-of-scope user profiles
Impact
Call /users/merge to soft-delete target and transfer assigned assets
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Vulnerability AssessmentAI

Exploitation Exploitation requires two concrete prerequisites: (1) a valid authenticated session or API token for a company-scoped user account (CVSS PR:L confirmed), and (2) FMCS floater mode must be actively enabled by an administrator - this is a non-default configuration (CVSS 4.0 AT:P). … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment The CVSS 4.0 vector (AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:L) produces a 7.6 score. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An authenticated company-scoped user holding a valid API token in a Snipe-IT instance with FMCS floater mode enabled queries /api/v1/users, receiving a response that includes user records with null company_id - accounts outside their authorized scope. The attacker enumerates /api/v1/users/{id}/licenses for each out-of-scope user to harvest assigned software license data, then calls /users/merge to soft-delete a target null-company user and transfer their assigned hardware assets to an account under the attacker's company. …
Remediation Upgrade to Snipe-IT version 8.6.3, which is confirmed by the official GitHub release tag at https://github.com/grokability/snipe-it/releases/tag/v8.6.3 and the patch commit at https://github.com/grokability/snipe-it/commit/fbe05a8df4742729a9b0756c016d45f48246cc7b. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 24 hours, disable FMCS floater mode in Snipe-IT configuration to eliminate the primary attack vector and implement network-level access controls restricting API endpoint access to authorized sources only. …

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Threat intelligence, references, and detailed analysis are available after sign-in.

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CVE-2026-55643 vulnerability details – vuln.today
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