Distribution advisory
This page covers CVE-2026-22701 as tracked by PyPI (Root.io), for the package filelock. The fix is available in version 3.20.0+aikido.3; earlier versions remain affected.
How this vulnerability can be exploited
This issue can be reached with local access to the system, attack complexity is high, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity low, availability high.
CVSS metrics in full
The score comes from this vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:H
- Attack vector: Local — a local account, shell or session on the host is needed.
- Attack complexity: High — the attacker first has to win a race, learn a secret or otherwise prepare the target.
- Privileges required: Low — an ordinary user account is enough.
- User interaction: None — nobody has to be tricked into anything.
- Scope: Unchanged — the damage stays inside the vulnerable component.
- Confidentiality impact: None.
- Integrity impact: Low — limited, and the attacker does not choose what is affected.
- Availability impact: High — total loss, or loss the attacker controls.
Weakness class
ROOT-APP-PYPI-CVE-2026-22701 is classified as CWE-362: Race Condition. Concurrent operations share state without proper synchronisation, so timing decides whether the result is correct.
Affected software
ROOT-APP-PYPI-CVE-2026-22701 is recorded against 2 packages.
- filelock (fixed in 3.20.0+aikido.3)
- rootio-filelock (fixed in 3.12.2+root.io.1)
Timeline and source
Published on 14 July 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.
Other advisories for this package
filelock has other advisories on record. If you are patching this one, these are worth checking on the same host:
Same weakness in other software
These advisories are the same class of weakness (CWE-362: Race Condition) in other software:
