CVE-2026-112913

Full vulnerability record from the local CVENow database.

Description

filelock is a platform-independent file lock for Python. From 3.20.4 until 4.2.1, ReadWriteLock and AsyncReadWriteLock on Windows use _connect to attach SQLite to the lock database by pathname, allowing another local account that can create adjacent names to place a database-wal or database-journal side file before acquisition. An undeletable WAL file makes each read or write acquisition fail immediately with sqlite3.OperationalError regardless of timeout. Separately, when the database contains at least one table, a hot journal that grants the lock account modify rights can cause SQLite recovery to delete a file named by that journal only when the lock account has permission to delete the target. The issue requires a directory writable by another account, such as a shared Windows temporary directory, and does not affect private directories. This issue is fixed in version 4.2.1.

Severity

LOW

CVSS score

3.3 (v3.1)

Vulnerability status

Received

Source identifier

[email protected]

Published

2026-11-05 22:17:47.043000

Last modified

2026-11-05 22:17:47.043000

View original CVE JSON

{
  "id": "CVE-2026-112913",
  "sourceIdentifier": "[email protected]",
  "published": "2026-11-05T22:17:47.043",
  "lastModified": "2026-11-05T22:17:47.043",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "filelock is a platform-independent file lock for Python. From 3.20.4 until 4.2.1, ReadWriteLock and AsyncReadWriteLock on Windows use _connect to attach SQLite to the lock database by pathname, allowing another local account that can create adjacent names to place a database-wal or database-journal side file before acquisition. An undeletable WAL file makes each read or write acquisition fail immediately with sqlite3.OperationalError regardless of timeout. Separately, when the database contains at least one table, a hot journal that grants the lock account modify rights can cause SQLite recovery to delete a file named by that journal only when the lock account has permission to delete the target. The issue requires a directory writable by another account, such as a shared Windows temporary directory, and does not affect private directories. This issue is fixed in version 4.2.1."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "tox-dev",
          "product": "filelock",
          "versions": [
            {
              "version": ">= 3.20.4, < 4.2.1",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L",
          "baseScore": 3.3,
          "baseSeverity": "LOW",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "LOW"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 1.4
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-367"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/tox-dev/filelock/commit/1f582d02c7e5cb4aa7e41ddae211d32d31778f3b",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/tox-dev/filelock/commit/5e3f2ec0c5fb17cb2635b60b2b68bc63ab81ca2d",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/tox-dev/filelock/pull/834",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/tox-dev/filelock/pull/854",
      "source": "[email protected]"
    },
    {
      "url": "https://github.com/tox-dev/filelock/security/advisories/GHSA-9vhv-jxww-xfm5",
      "source": "[email protected]"
    }
  ]
}