How broadly exploitable is this vulnerability?

The vulnerability is typically exploitable by any user who can submit comments to channels, which in many deployments includes anonymous or low-privilege users. Because the flaw is blind SQL injection, exploitation may require more effort but can still lead to serious data compromise.

Does an attacker need elevated privileges or direct database access?

No elevated privileges or direct database access are required. The attacker interacts only with the web application endpoint (`/actions/ajax.php`) and leverages the application's database account indirectly via crafted `obj_id` values.

What is the safest general fix pattern for developers?

The most robust fix is to refactor all affected queries to use parameterized statements and enforce strict typing on inputs like `obj_id`. Additionally, centralizing query construction in a well-reviewed data access layer reduces the likelihood of new injection points being introduced.

Severity:

CRITICAL RISK

(9.8)

Blind SQL Injection (CWE-89) in ClipBucket v5 Channel Comment Handling

CVE-2026-21875

Published:

Jan 7, 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-306

CRITICAL RISK

CRITICAL

(9.8)

Missing Authentication for Forgot-Password Email Change API (CWE-306)

Account Takeover / Loss of Account Control

February 17, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in node-sonos-http-api TTS Provider for macOS

Remote Code Execution on the Server Host

February 17, 2026

Vulnerability Type

Category:

SQL Injection

CWE:

CWE-89

Impact:

Database Compromise and Remote Data Exfiltration

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

Vulnerability Type

Category:

SQL Injection

CWE:

CWE-89

Impact:

Database Compromise and Remote Data Exfiltration

Severity:

CRITICAL RISK

(9.8)

CVSS Version:

3.1

Catch This CVE While Code Is Being Written

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Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Blind SQL Injection (CWE-89) in ClipBucket v5 Channel Comment Handling

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

CRITICAL RISK

CRITICAL

(9.8)

Missing Authentication for Forgot-Password Email Change API (CWE-306)

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in node-sonos-http-api TTS Provider for macOS

Vulnerability Type

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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