CVE-2026-107854 (GCVE-0-2026-107854)

Vulnerability from cvelistv5 – Published: 2026-10-09 20:31 – Updated: 2026-10-09 20:31
VLAI
Title
Jexactyl: Free-billing order endpoint renews and unsuspends arbitrary servers by ID (missing ownership check)
Summary
Jexactyl is a customisable game management panel and billing system. From 4.0.0 until 4.0.5, the POST /api/client/billing/free/process endpoint accepts a client-controlled server_id and loads the server without restricting the lookup to servers owned by the authenticated account. On installations with billing enabled, an authenticated user can renew or unsuspend another tenant's billable server when its renewal_date is non-null and more than seven days away, even without a subuser relationship to that server. This issue is fixed in version 4.0.5.
Severity
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7592 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Jexactyl Jexactyl Affected: >= 4.0.0, < 4.0.5
guessed Create a notification for this product.
Show details on NVD website
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{
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        }
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              "description": "CWE-639: Authorization Bypass Through User-Controlled Key",
              "lang": "en",
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      "providerMetadata": {
        "dateUpdated": "2026-10-09T20:31:02.541Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
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          "tags": [
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          ],
          "url": "https://github.com/Jexactyl/Jexactyl/security/advisories/GHSA-9xwv-p7r5-5h5p"
        },
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        },
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          "tags": [
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          ],
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        }
      ],
      "source": {
        "advisory": "GHSA-9xwv-p7r5-5h5p",
        "discovery": "UNKNOWN"
      },
      "title": "Jexactyl: Free-billing order endpoint renews and unsuspends arbitrary servers by ID (missing ownership check)"
    }
  },
  "cveMetadata": {
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    "cveId": "CVE-2026-107854",
    "datePublished": "2026-10-09T20:31:02.541Z",
    "dateReserved": "2026-10-08T22:34:49.292Z",
    "dateUpdated": "2026-10-09T20:31:02.541Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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      "date": "2026-10-11",
      "epss": "0.00211",
      "percentile": "0.10554"
    },
    "nvd": {
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                    "version": "\u003e= 4.0.0, \u003c 4.0.5"
                  }
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          }
        ],
        "id": "CVE-2026-107854",
        "lastModified": "2026-10-09T21:17:03.233",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
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          },
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            "url": "https://github.com/Jexactyl/Jexactyl/releases/tag/v4.0.5"
          },
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            "url": "https://github.com/Jexactyl/Jexactyl/security/advisories/GHSA-9xwv-p7r5-5h5p"
          }
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        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Received",
        "weaknesses": [
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            "description": [
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                "lang": "en",
                "value": "CWE-639"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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