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GeekWala

CVE-2026-33202

MEDIUM

Rails Active Storage has possible glob injection in its DiskService

Published March 23, 2026Updated May 13, 2026Source: osv

Summary

### Impact 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. ### Releases The fixed releases are available at the normal locations.

Remediation

Upgrade to the fixed version using your package manager.

Bundler
Update activestorage to 8.1.2.1 or later
gem install activestorage -v 8.1.2.1
Bundler
Update activestorage to 8.0.4.1 or later
gem install activestorage -v 8.0.4.1
Bundler
Update activestorage to 7.2.3.1 or later
gem install activestorage -v 7.2.3.1

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (3)

PackageEcosystemAffectedFixed In
activestorage
rubygems
8.1.0, 8.1.0.beta1, 8.1.0.rc1, 8.1.1 (+1 more)8.1.2.1
activestorage
rubygems
8.0.0, 8.0.0.1, 8.0.0.beta1, 8.0.0.rc1 (+6 more)8.0.4.1
activestorage
rubygems
0.1, 5.2.0, 5.2.0.beta1, 5.2.0.beta2 (+157 more)7.2.3.1

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 7.5 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
—
Confidentiality
—
Integrity
—
Availability
—

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U

References

Frequently Asked Questions

What is CVE-2026-33202?
Rails Active Storage has possible glob injection in its DiskService This vulnerability has been assigned a severity rating of MEDIUM (CVSS score: 7.5/10).
How do I check if my project is affected by CVE-2026-33202?
CVE-2026-33202 affects activestorage. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-33202 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
7.5

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-73f9-jhhh-hr5m

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