2.5

CVE-2026-112912: tox-dev filelock Link Following

CVSS: 2.5v3.1LowReceived
Published 20-10-2026Last modified 20-10-2026
Open JSON

Vulnerability summary

CVE-2026-112912 is a low (CVSS 2.5) Link Following vulnerability in tox-dev filelock.

Overall risk
10/100
0100
Low · default modelHow is this calculated?
CVSS score
2.5/10
010
Low · v3.1 (CVE.org)
EPSS score
Not scored
0%100%
No EPSS score yet
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 20-10-2026
    PublishedVulnerability first disclosed.
  2. 20-10-2026
    Last modifiedVulnerability information updated.

Description

filelock is a platform-independent file lock for Python. From 3.32.6 until 4.2.1, SoftFileLock can follow a swapped symbolic link during the conditional os.access writability check for a node without its owner-write bit, allowing another local user on a platform and directory configuration that follows the link to infer whether a chosen path exists and is writable from the observable acquisition result. This issue is fixed in version 4.2.1.

CVSS metrics

2 scores · 2 sources · 1 version

EPSS trend

No EPSS score has been published for this record yet.

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Tox-dev1 product

1 vendor · 1 product

References

4 links