Vulnerability · Published Sep 21, 2026 · Assigned by GitHub_M

CVE-2026-55567BleachBit: Exploit File Delete to Escalate Privilege

High 7.8

In plain English

A high-severity security flaw in bleachbit from bleachbit. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 3% of all known vulnerabilities).

Severity (CVSS 3.1)7.8High

Exploit odds (30 days)0.1%top 97.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Ubuntu:22.04:LTS	bleachbit	no fix listed	UBUNTU-CVE-2026-55567
Ubuntu:24.04:LTS	bleachbit	no fix listed	UBUNTU-CVE-2026-55567
Ubuntu:26.04:LTS	bleachbit	no fix listed	UBUNTU-CVE-2026-55567

Affected products (as reported)

Vendor	Product	Versions
bleachbit	bleachbit	< 6.0.1

Weakness: CWE-367 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

https://github.com/bleachbit/bleachbit/security/advisories/GHSA-vcjw-px28-5w94 x_refsource_CONFIRM
https://github.com/bleachbit/bleachbit/pull/1774 x_refsource_MISC
https://github.com/bleachbit/bleachbit/commit/ee128238e92c7192f0c4d6406b1bd0cd9155e7e0 x_refsource_MISC
https://github.com/bleachbit/bleachbit/releases/tag/v6.0.1 x_refsource_MISC