Is this vulnerability remotely exploitable?

Yes, in scenarios where remote users can influence blob keys or cause the application to generate keys containing glob metacharacters, they can indirectly trigger unintended file deletions via standard application workflows.

What level of access does an attacker need to exploit this?

The attacker needs logical access sufficient to create or control blobs or related identifiers that feed into `delete_prefixed`. This often corresponds to the ability to upload files, manipulate metadata, or exploit application logic that incorporates user data into blob keys.

What is the safest general fix pattern?

The safest pattern is to treat all blob keys as opaque data and ensure they are passed to filesystem APIs using literal semantics. This typically means escaping glob metacharacters before calling `Dir.glob` or replacing glob-based deletion with direct, deterministic file path construction that does not interpret special characters.

Severity:

CRITICAL RISK

(9.1)

Unescaped File Pattern Deletion (CWE-74) in Rails Active Storage DiskService

CVE-2026-33202

Published:

Mar 23, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

Remote Code Execution on the Router

April 6, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Remote Code Execution on Router Firmware

April 6, 2026

Vulnerability Type

Category:

Injection

CWE:

CWE-74

Impact:

Arbitrary File Deletion within Storage Directory

Severity:

CRITICAL RISK

(9.1)

CVSS Version:

3.1

Vulnerability Type

Category:

Injection

CWE:

CWE-74

Impact:

Arbitrary File Deletion within Storage Directory

Severity:

CRITICAL RISK

(9.1)

CVSS Version:

3.1

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Unescaped File Pattern Deletion (CWE-74) in Rails Active Storage DiskService

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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