CVE-2026-21875 — CVE & Security Advisory Radar

🎯 CVE-2026-21875 🧪 PoC 🇪🇺 EUVD

📄 .md Alle CVEs anzeigen ✕

CVE-2026-21875 | ClipBucket v5 is an open source video sharing platform. Versions 5.5.2-#187 and below allow an attacker to perform Blind SQL Injection through the add comment section within a channel. When adding a comment within a channel, there is a POST request to the /actions/ajax.php endpoint. The obj_id parameter within the POST request to /actions/ajax.php is then used within the user_exists function of the upload/includes/classes/user.class. php file as the $id param

ClipBucket v5 is an open source video sharing platform. Versions 5.5.2-#187 and below allow an attacker to perform Blind SQL Injection through the add comment section within a channel. When adding a comment within a channel, there is a POST request to the /actions/ajax.php endpoint. The obj_id parameter within the POST request to /actions/ajax.php is then used within the user_exists function of the upload/includes/classes/user.class. php file as the $id parameter. It is then used within the count function of the upload/includes/classes/db.class. php file. The $id parameter is concatenated into the query without validation or sanitization, and a user-supplied input like 1' or 1=1-- - can be used to trigger the injection. This issue does not have a fix at the time of publication.

Klassifikation & Betroffenheit:

MacWarrior clipbucket-v5 ≤ 5.5.2-#187oxygenz clipbucket *

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') 🎯 High

The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as…

🛡️ Empfohlene Mitigation: Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid [REF-1482]. For example, consider using persistence layers such as Hibernate or Enterprise Java Beans, which can provide significant protection against SQL injection if used proper…

Vollständige Definition bei MITRE ➔

⚔️ Typische Angriffsmuster (CAPEC):

CAPEC-7 · Blind SQL Injection (High) CAPEC-66 · SQL Injection (High) CAPEC-108 · Command Line Execution through SQL Injec… (Very High) CAPEC-109 · Object Relational Mapping Injection (High) CAPEC-110 · SQL Injection through SOAP Parameter Tam… (Very High) CAPEC-470 · Expanding Control over the Operating Sys… (Very High)

🧩 Ähnliche Schwachstellen (Hersteller/Klasse/Score-Band):

CVE-2026-45060 9.8 CVE-2026-42846 9.8 CVE-2025-21624 9.8 CVE-2024-54135 9.8 CVE-2024-54136 9.8

📚 Referenzen & Quellen:

🇪🇺 Original-Eintrag (ENISA EUVD) 🇺🇸 NVD-Eintrag

🔗 github.com/MacWarrior/clipbucket-v5/security/advisor…

Ausnutzungs-Zeitleiste:

Reserviert 2026

Veröffentlicht 01/2026

Heute 21.09.

CVSS-Vektor-Analyse: 9.8

AV · Angriffsvektor Netzwerk

AC · Komplexität Gering

PR · Privilegien Keine

UI · Interaktion Keine

S · Scope Unverändert

C · Vertraulichkeit Hoch

I · Integrität Hoch

A · Verfügbarkeit Hoch

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Veröffentlicht:08.01.2026

Aktualisiert:17.06.2026 10:19

Assigner (CNA):GitHub_M

EUVD-ID:EUVD-2026-1662

Quellen: 🇪🇺 EUVD-Datenbank (ENISA) + 🇺🇸 NVD-Anreicherung · 24-h-Cache

CWE-89: SQL Injection ✓ Offizieller Patch / Advisory verfügbar

💡 Gegenmaßnahme: Sicherheits-Update des Herstellers zeitnah einspielen und Netzwerksegmentierung prüfen.

Tier	2026-09-02	2026-09-20
≥90 %	0	489
≥50 %	0	1477
≥10 %	0	0
<10 %	300	0

EPSS

1.5%

CVE-2026-21875 🌐 Netzwerk (Remote) 🔓 Keine Authentifizierung nötig

MacWarrior

CVE-2026-21875 | ClipBucket v5 is an open source video sharing platform. Versions 5.5.2-#187 and below allow an attacker to perform Blind SQL Injection through the add comment section within a channel. When adding a comment within a channel, there is a POST request to the /actions/ajax.php endpoint. The obj_id parameter within the POST request to /actions/ajax.php is then used within the user_exists function of the upload/includes/classes/user.class. php file as the $id param

CWE-89: SQL Injection ✓ Offizieller Patch / Advisory verfügbar

💡 Gegenmaßnahme: Sicherheits-Update des Herstellers zeitnah einspielen und Netzwerksegmentierung prüfen.

07.01.2026

🛡️ Details ➔

Zero-Day & Vulnerability Intelligence Hub