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
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RUBY-ACTIVESTORAGE-15762293
- published24 Mar 2026
- disclosed24 Mar 2026
- creditUnknown
Introduced: 24 Mar 2026
CVE-2026-33173 (opens in a new tab)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.