Improper Verification of Intent by Broadcast Receiver Affecting rails package, versions <2:7.2.3.1+dfsg-1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.39% (31st percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-RAILS-15805682
  • published29 Mar 2026
  • disclosed24 Mar 2026

Introduced: 24 Mar 2026

CVE-2026-33173  (opens in a new tab)
CWE-925  (opens in a new tab)

How to fix?

Upgrade Debian:unstable rails to version 2:7.2.3.1+dfsg-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rails package and not the rails package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

Active Storage allows users to attach cloud and local files in Rails applications. Prior to versions 8.1.2.1, 8.0.4.1, and 7.2.3.1, DirectUploadsController accepts arbitrary metadata from the client and persists it on the blob. Because internal flags like identified and analyzed are stored in the same metadata hash, a direct-upload client can set these flags to skip MIME detection and analysis. This allows an attacker to upload arbitrary content while claiming a safe content_type, bypassing any validations that rely on Active Storage's automatic content type identification. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.

CVSS Base Scores

version 3.1