CVE-2026-112906

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Source
https://cve.org/CVERecord?id=CVE-2026-112906
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-112906.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-112906
Aliases
  • GHSA-2g95-wg33-c5x2
Downstream
Published
2026-10-20T14:09:51Z
Modified
2026-10-22T02:48:51Z
Severity
  • 4.7 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
Summary
filelock: SoftFileLock evicts a fresh lock file whose watched age another local user's pre-dated file passed on through inode reuse
Details

filelock is a platform-independent file lock for Python. From 4.1.0 until 4.2.1, SoftFileLock versions from 4.1.0 can reuse a stale observation when an attacker pre-dates and removes its own marker, at least two lock-user processes are waiting, coarse or matching modification times preserve the observation, and an honest contender creates a fresh marker on the reused inode, causing that live marker to be removed as stale. This issue is fixed in version 4.2.1.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-694"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/112xxx/CVE-2026-112906.json"
}
References

Affected packages

Git / github.com/tox-dev/filelock

Affected ranges

Type
GIT
Repo
https://github.com/tox-dev/filelock
Events
Introduced
6c0ecc28f898f08cd0438cd489c3eaabad79a4b7
Fixed
60331bb89f325020b48bc51bde904c6446384e4a
Fixed
740ff666b62a88496c8d7394e4e6230605e4d62b
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "4.1.0"
                },
                {
                    "fixed":  "4.2.1"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "fixed":  "740ff666b62a88496c8d7394e4e6230605e4d62b"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "4.2.1",
            "range":  [
                {
                    "fixed":  "60331bb89f325020b48bc51bde904c6446384e4a"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

4.*
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-2026-112906.json"