Improper Handling of Values Affecting activestorage package, versions <7.2.3.1>=8.0.0.beta1, <8.0.4.1>=8.1.0.beta1, <8.1.2.1
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Test your applications- Snyk IDSNYK-RUBY-ACTIVESTORAGE-15762293
- published24 Mar 2026
- disclosed24 Mar 2026
- creditUnknown
Introduced: 24 Mar 2026
NewCVE-2026-33173 (opens in a new tab)Common Vulnerabilities and Exposures (CVE) are common identifiers for publicly known security vulnerabilities
Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
Upgrade activestorage to version 7.2.3.1, 8.0.4.1, 8.1.2.1 or higher.
Overview
Affected versions of this package are vulnerable to Improper Handling of Values in the DirectUploadsController. A malicious direct-upload client can set content_type flags like identified and analyzed to make a malicious uploaded file appear safe.