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CVE-2026-55567 Details

Description

BleachBit cleans files to free disk space and to maintain privacy. Prior to 6.0.1, privileged Windows cleaning does not lock and validate a target's parent directory before deletion. A local unprivileged user can replace that directory with a Windows junction and use a native symlink to redirect the elevated deletion to an attacker-selected file. The arbitrary privileged file deletion can be combined with Windows Installer behavior to obtain local SYSTEM privileges. This issue is fixed in version 6.0.1.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:7.8 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/bleachbit/bleachbit/security/advisories/GHSA-vcjw-px28-5w94	CISA-ADP
https://github.com/bleachbit/bleachbit/commit/ee128238e92c7192f0c4d6406b1bd0cd9155e7e0	[email protected]
https://github.com/bleachbit/bleachbit/pull/1774	[email protected]
https://github.com/bleachbit/bleachbit/releases/tag/v6.0.1	[email protected]
https://github.com/bleachbit/bleachbit/security/advisories/GHSA-vcjw-px28-5w94	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-367	Time-of-check Time-of-use (TOCTOU) Race Condition	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

Date	Action	Recorded By
Sep 21, 2026	CVE Modified	CISA-ADP
Sep 21, 2026	New CVE Received	[email protected]