CVE-2026-112911

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Source
https://cve.org/CVERecord?id=CVE-2026-112911
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-112911.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-112911
Aliases
Downstream
CGA (14)
CLEANSTART (3)
DEBIAN (1)
ECHO (1)
UBUNTU (1)
Published
2026-10-20T14:21:24Z
Modified
2026-10-30T02:31:02Z
Severity
  • 6.3 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:H CVSS Calculator
Summary
filelock: StrictSoftFileLock and SoftReadWriteLock adopt a protocol directory another user created first, losing mutual exclusion
Details

filelock is a platform-independent file lock for Python. From 3.30.0 until 4.2.1, StrictSoftFileLock versions from 3.30.0 and SoftReadWriteLock versions from 4.0.0 can adopt a protocol directory created first by another local user in a shared parent directory, allowing that user to alter protocol state and admit concurrent holders. This issue is fixed in version 4.2.1.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-283"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/112xxx/CVE-2026-112911.json"
}
References

Affected packages

Git / github.com/tox-dev/filelock

Affected ranges

Type
GIT
Repo
https://github.com/tox-dev/filelock
Events
Introduced
1b094069044a3f2a39173ae841eb22b274833ff9
Fixed
60331bb89f325020b48bc51bde904c6446384e4a
Fixed
bfa066d65a1ba9106f86ee9d027f7588b9c77e03
Database specific
Show details 
{
    "extracted_events": [
        {
            "cpe": "cpe:2.3:a:tox-dev:filelock:*:*:*:*:*:python:*:*",
            "range": [
                {
                    "introduced": "3.30.0"
                },
                {
                    "fixed": "4.2.1"
                }
            ],
            "source": "CPE_RANGE"
        },
        {
            "range": [
                {
                    "fixed": "bfa066d65a1ba9106f86ee9d027f7588b9c77e03"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "original_tag": "4.2.1",
            "range": [
                {
                    "fixed": "60331bb89f325020b48bc51bde904c6446384e4a"
                }
            ],
            "source": "REFERENCES_TAG"
        }
    ]
}

Affected versions

3.*
3.30.0
3.30.1
3.30.2
3.30.3
3.31.0
3.31.1
3.31.2
3.32.0
3.32.1
3.32.2
3.32.3
3.32.4
3.32.5
3.32.6
3.32.7
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-2026-112911.json"