Vulnerability-Lookup

CVE-2026-86766 (GCVE-0-2026-86766)

Vulnerability from cvelistv5 – Published: 2026-09-09 13:32 – Updated: 2026-09-09 14:18

Title

Snipe-IT 8.6.3 Race Condition via Consumable Checkout

Summary

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.

Severity

7.1 (High)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

SSVC

Exploitation: poc Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-09 14:08 UTC

CWE

CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Assigner

VulnCheck mitre root

References

3 references

URL	Tags
https://github.com/grokability/snipe-it/security/…	vendor-advisory
https://github.com/grokability/snipe-it/commit/f7…	patch
https://www.vulncheck.com/advisories/snipe-it-8.6…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version	CPE status
grokability	snipe-it	Affected: 8.6.3 , < 8.7.0 (semver) Unaffected: 8.7.0 (semver) cpe:2.3:a:snipeitapp:snipe-it::::::::

Date Public

2026-08-24 00:00

Credits

nullbenny

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-86766

Vulnerability from fkie_nvd - Published: 2026-09-09 14:17 - Updated: 2026-09-09 20:16

Severity

6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Summary

References

	URL	Tags
	disclosure@vulncheck.com	https://github.com/grokability/snipe-it/commit/f71806b1e0efbd3bc2b6be61994ad2a5d5d6c206
	disclosure@vulncheck.com	https://github.com/grokability/snipe-it/security/advisories/GHSA-x4g2-87xc-m5jm
	disclosure@vulncheck.com	https://www.vulncheck.com/advisories/snipe-it-8.6.3-race-condition-via-consumable-checkout
	134c704f-9b21-4f2e-91b3-4a467353bcc0	https://github.com/grokability/snipe-it/security/advisories/GHSA-x4g2-87xc-m5jm

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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          "defaultStatus": "unaffected",
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          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "disclosure@vulncheck.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-86766",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-09T14:08:27.655436Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-09T14:17:26.963",
  "references": [
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/grokability/snipe-it/commit/f71806b1e0efbd3bc2b6be61994ad2a5d5d6c206"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://github.com/grokability/snipe-it/security/advisories/GHSA-x4g2-87xc-m5jm"
    },
    {
      "source": "disclosure@vulncheck.com",
      "url": "https://www.vulncheck.com/advisories/snipe-it-8.6.3-race-condition-via-consumable-checkout"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/grokability/snipe-it/security/advisories/GHSA-x4g2-87xc-m5jm"
    }
  ],
  "sourceIdentifier": "disclosure@vulncheck.com",
  "vulnStatus": "Undergoing Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-362"
        }
      ],
      "source": "disclosure@vulncheck.com",
      "type": "Secondary"
    }
  ]
}

GHSA-463Q-RQPX-H2JJ

Vulnerability from github – Published: 2026-09-09 15:35 – Updated: 2026-09-09 15:35

Details

Severity

6.5 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

7.1 (High)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-86766"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-362"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-09T14:17:26Z",
    "severity": "HIGH"
  },
  "details": "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.",
  "id": "GHSA-463q-rqpx-h2jj",
  "modified": "2026-09-09T15:35:14Z",
  "published": "2026-09-09T15:35:14Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/grokability/snipe-it/security/advisories/GHSA-x4g2-87xc-m5jm"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-86766"
    },
    {
      "type": "WEB",
      "url": "https://github.com/grokability/snipe-it/commit/f71806b1e0efbd3bc2b6be61994ad2a5d5d6c206"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/snipe-it-8.6.3-race-condition-via-consumable-checkout"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/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",
      "type": "CVSS_V4"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

CVE-2026-86766 (GCVE-0-2026-86766)

FKIE_CVE-2026-86766

GHSA-463Q-RQPX-H2JJ

Tags

Sightings

Nomenclature