Incomplete List of Disallowed Inputs Affecting bleach package, versions [,6.4.0)
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Test your applications- Snyk IDSNYK-PYTHON-BLEACH-17356111
- published17 Jun 2026
- disclosed16 Jun 2026
- creditUnknown
Introduced: 16 Jun 2026
CVE NOT AVAILABLE CWE-184 (opens in a new tab)How to fix?
Upgrade bleach to version 6.4.0 or higher.
Overview
bleach is a whitlist-based HTML sanitizing library that escapes or strips markup and attributes.
Affected versions of this package are vulnerable to Incomplete List of Disallowed Inputs via the bleach.clean() function when processing URIs containing disallowed scheme patterns with inserted Unicode characters. An attacker can cause the sanitizer to output URIs that violate the intended protocol allowlist by crafting links with non-ASCII characters in the scheme portion. If a downstream system performs Unicode normalization on the output, this could enable execution of unintended scripts.