Bug 2450547 (CVE-2026-33202)

Summary: CVE-2026-33202 rails: Active Storage: Unintended file deletion via crafted blob keys
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: akostadi, amasferr, dmayorov, jlledo, jvasik, kaycoth, pantinor, rblanco, tsedmik, vmugicag
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in Active Storage, a component of Rails applications. This vulnerability occurs because Active Storage's `DiskService#delete_prefixed` function does not properly escape glob metacharacters when processing blob keys. A remote attacker could exploit this by providing a specially crafted blob key, potentially leading to the deletion of unintended files from the storage directory. This could result in a data loss.
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Description OSIDB Bzimport 2026-03-24 00:02:18 UTC
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, Active Storage's `DiskService#delete_prefixed` passes blob keys directly to `Dir.glob` without escaping glob metacharacters. If a blob key contains attacker-controlled input or custom-generated keys with glob metacharacters, it may be possible to delete unintended files from the storage directory. Versions 8.1.2.1, 8.0.4.1, and 7.2.3.1 contain a patch.