CVE-2026-112934

Source
https://cve.org/CVERecord?id=CVE-2026-112934
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-112934.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-112934
Aliases
  • GHSA-fj95-fr6c-h845
Downstream
Published
2026-10-20T14:30:43Z
Modified
2026-10-22T02:47:54Z
Severity
  • 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H CVSS Calculator
Summary
filelock: SoftReadWriteLock holder refresh writes through a hard link and hangs on a named pipe that another local user renames over its record
Details

filelock is a platform-independent file lock for Python. From 4.0.0 until 4.2.1, SoftReadWriteLock refreshes holder records by name, allowing another local user with rename access to the lock directory to replace a record with a named pipe and stall the lock, or under a permissive hard-link policy to link a reachable target file and cause the lock user to write through it. This issue is fixed in version 4.2.1.

Database specific
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-62"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/112xxx/CVE-2026-112934.json"
}
References

Affected packages

Git / github.com/tox-dev/filelock

Affected ranges

Type
GIT
Repo
https://github.com/tox-dev/filelock
Events
Database specific
Show details
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "4.0.0"
                },
                {
                    "fixed":  "4.2.1"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "fixed":  "bfa066d65a1ba9106f86ee9d027f7588b9c77e03"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "4.2.1",
            "range":  [
                {
                    "fixed":  "60331bb89f325020b48bc51bde904c6446384e4a"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

4.*
4.0.0
4.0.1
4.0.10
4.0.11
4.0.12
4.0.2
4.0.3
4.0.4
4.0.5
4.0.6
4.0.7
4.0.8
4.0.9
4.1.0
4.1.1
4.1.2
4.2.0

Database specific

source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-112934.json"