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CVE-2026-86766— Snipe-IT 8.6.3 Race Condition via Consumable Checkout

Quick assessment

Affected
grokability snipe-it
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Grokability Snipe-IT是Grokability公司开源的一套面向企业的IT资产与运维管理平台。 Grokability Snipe-IT 8.6.3及之前版本存在竞争条件问题漏洞，该漏洞源于耗材结账API端点存在竞争条件（TOCTOU），在数据库事务开始前验证请求数量，但事务创建结账记录时未锁定耗材行或重新检查可用性，具有结账权限的已认证用户可对同一耗材提交并发结账请求，导致库存超额分配及剩余库存变为负数。

CVSS 6.5 · Medium EPSS 0.35% · P27

Possible ATT&CK Techniques 1 AI

T1202 · Indirect Command Execution

Affected Version Matrix 2

VendorProduct Version RangeStatus
grokability snipe-it 8.6.3< 8.7.0 affected
8.7.0 unaffected
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I. Basic Information for CVE-2026-86766

Vulnerability Information
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Vulnerability Title
Snipe-IT 8.6.3 Race Condition via Consumable Checkout
Source: CVE Program / CVE List V5
Vulnerability Description
Snipe-IT versions up to and including 8.6.3 contain a race condition (TOCTOU) in the consumable checkout API endpoint (POST /api/v1/consumables/{consumable_id}/checkout). The requested quantity is validated against the number of remaining units before the database transaction begins, and the transaction then creates the checkout records without locking the consumable row or re-checking availability. An authenticated user with permission to check out consumables can submit concurrent checkout requests for the same consumable so that both requests pass the availability check and succeed, over-allocating stock and driving the remaining inventory negative (e.g., a consumable with 1 remaining unit ends at -1 after two concurrent 1-unit checkouts). The issue is fixed in 8.7.0, which re-fetches the parent row under lockForUpdate inside the transaction and re-validates availability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用共享资源的并发执行不恰当同步问题(竞争条件)
Source: CVE Program / CVE List V5
Vulnerability Title
Grokability Snipe-IT 竞争条件问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Grokability Snipe-IT是Grokability公司开源的一套面向企业的IT资产与运维管理平台。 Grokability Snipe-IT 8.6.3及之前版本存在竞争条件问题漏洞，该漏洞源于耗材结账API端点存在竞争条件（TOCTOU），在数据库事务开始前验证请求数量，但事务创建结账记录时未锁定耗材行或重新检查可用性，具有结账权限的已认证用户可对同一耗材提交并发结账请求，导致库存超额分配及剩余库存变为负数。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
grokability snipe-it 8.6.3 ~ 8.7.0 -

II. Public POCs for CVE-2026-86766

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III. Intelligence Information for CVE-2026-86766

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Vendor Advisories for CVE-2026-86766 (2)

Same Patch Batch · grokability · 2026-09-09 · 36 CVEs total

CVE-2026-86741 8.5 HIGH Snipe-IT before 8.7.0 Arbitrary File Read and SSRF via Category EULA
CVE-2026-86751 8.5 HIGH Snipe-IT before 8.7.0 Arbitrary File Read and SSRF via Markdown
CVE-2026-86762 8.1 HIGH Snipe-IT before 8.7.0 Authentication Bypass via API Middleware
CVE-2026-86770 8.1 HIGH Snipe-IT before 8.7.0 Authentication Bypass via SAML Username Collation
CVE-2026-86750 7.7 HIGH snipe-it before 8.7.0 Authorization Bypass via API User Create/Update
CVE-2026-86771 7.6 HIGH Snipe-IT before 8.7.0 Server-Side Request Forgery via employee_num
CVE-2026-86754 7.3 HIGH Snipe-IT before 8.7.0 Authorization Bypass via OAuth Clients
CVE-2026-86759 7.1 HIGH Snipe-IT before 8.7.0 Missing Authorization via asset-history CSV importer
CVE-2026-86757 6.5 MEDIUM Snipe-IT before 8.7.0 Information Disclosure via Custom Fields
CVE-2026-86764 6.5 MEDIUM Snipe-IT 8.6.4 before 8.7.0 Permission Bypass via assigned components
CVE-2026-86758 6.5 MEDIUM Snipe-IT before 8.7.0 License Key Exposure via CSV Export
CVE-2026-86765 6.5 MEDIUM Snipe-IT 8.6.3 Authorization Bypass via Asset Update Endpoint
CVE-2026-86742 6.5 MEDIUM Snipe-IT before 8.7.0 CSV Formula Injection via Asset Acceptance Report
CVE-2026-86745 6.5 MEDIUM Snipe-IT before 8.7.0 CSV Formula Injection via Location-Scoping Export
CVE-2026-86746 6.4 MEDIUM Snipe-IT before 8.7.0 Authorization Bypass via Livewire Snapshot Replay
CVE-2026-86774 6.3 MEDIUM Snipe-IT before 8.7.0 Broken Access Control via AssetModelPolicy
CVE-2026-86749 6.3 MEDIUM snipe-it before 8.7.0 Data Loss via Failed Image Write
CVE-2026-86756 6.1 MEDIUM Snipe-IT 8.5.0 through 8.6.3 Open Redirect via SAML RelayState
CVE-2026-86748 6.1 MEDIUM Snipe-IT before 8.7.0 Database Wipe via Invalid Backup Archive
CVE-2026-86768 5.4 MEDIUM Snipe-IT before 8.7.0 Improper Input Validation via API Checkout

Showing top 20 of 36 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: snipe-it
Same vendor: grokability
Same weakness: CWE-362