CVE-2026-112940

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Source
https://cve.org/CVERecord?id=CVE-2026-112940
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-112940.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-112940
Aliases
  • GHSA-v4x8-3wr5-3wq8
Downstream
Published
2026-10-20T14:41:49Z
Modified
2026-10-22T02:49:06Z
Severity
  • 7.1 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H CVSS Calculator
Summary
filelock ReadWriteLock: SQLite reopens the lock database by name, so a planted symlink or journal file makes the lock user's process overwrite or unlink its own files
Details

filelock is a platform-independent file lock for Python. From 3.20.4 until 4.2.1, ReadWriteLock let SQLite reopen the database and side files by name; on POSIX systems an attacker with rename access in a non-sticky parent can swap those names to cause overwrite or unlink operations, while a writable adjacent hot journal is additionally required for attacker-chosen content overwrites. This issue is fixed in version 4.2.1.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-363"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/112xxx/CVE-2026-112940.json"
}
References

Affected packages

Git / github.com/tox-dev/filelock

Affected ranges

Type
GIT
Repo
https://github.com/tox-dev/filelock
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
60331bb89f325020b48bc51bde904c6446384e4a
Fixed
5e3f2ec0c5fb17cb2635b60b2b68bc63ab81ca2d
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "3.20.4"
                },
                {
                    "fixed":  "4.2.1"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "fixed":  "5e3f2ec0c5fb17cb2635b60b2b68bc63ab81ca2d"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "4.2.1",
            "range":  [
                {
                    "fixed":  "60331bb89f325020b48bc51bde904c6446384e4a"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

3.*
3.1.0
3.10.0
3.10.1
3.10.2
3.10.3
3.10.4
3.10.5
3.10.6
3.10.7
3.11.0
3.12.0
3.12.1
3.12.2
3.12.3
3.12.4
3.13.0
3.13.1
3.13.2
3.13.3
3.13.4
3.14.0
3.15.0
3.15.1
3.15.2
3.15.3
3.15.4
3.16.0
3.16.1
3.17.0
3.18.0
3.19.0
3.19.1
3.2.0
3.2.1
3.20.0
3.20.1
3.20.2
3.20.3
3.21.0
3.21.1
3.21.2
3.22.0
3.23.0
3.24.0
3.24.1
3.24.2
3.24.3
3.24.4
3.25.0
3.25.1
3.25.2
3.26.0
3.26.1
3.27.0
3.28.0
3.29.0
3.29.1
3.29.2
3.29.3
3.29.4
3.29.5
3.29.6
3.29.7
3.3.0
3.3.1
3.3.2
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
3.4.0
3.4.1
3.4.2
3.5.0
3.5.1
3.6.0
3.7.0
3.7.1
3.8.0
3.8.1
3.8.2
3.9.0
3.9.1
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
v1.*
v1.0.0
v1.0.1
v1.0.2
v1.0.3
v2.*
v2.0.0
v2.0.1
v2.0.10
v2.0.11
v2.0.12
v2.0.13
v2.0.2
v2.0.3
v2.0.4
v2.0.5
v2.0.6
v2.0.7
v2.0.8
v2.0.9
v3.*
v3.0.0
v3.0.1
v3.0.10
v3.0.12
v3.0.3
v3.0.4
v3.0.6
v3.0.7
v3.0.8
v3.0.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-112940.json"