CVE-2026-25728

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-25728
ClipBucket v5 is an open source video sharing platform. Prior to 5.5.3 - #40, a Time-of-Check to Time-of-Use (TOCTOU) race condition vulnerability exists in ClipBucket's avatar and background image upload functionality. The application moves uploaded files to a web-accessible location before validating them, creating a window where an attacker can execute arbitrary PHP code before the file is deleted. The uploaded file was moved to a web-accessible path via move_uploaded_file(), then validated via ValidateImage(). If validation failed, the file was deleted via @unlink(). This vulnerability is fixed in 5.5.3 - #40.

7.5 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.6 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/MacWarrior/clipbucket-v5/commit/09536e6e2ca6d69a2ee83190b588c0b8116dd16d Patch
https://github.com/MacWarrior/clipbucket-v5/security/advisories/GHSA-xq7c-m5r2-9wqj Exploit Mitigation Vendor Advisory
https://github.com/MacWarrior/clipbucket-v5/security/advisories/GHSA-xq7c-m5r2-9wqj Exploit Mitigation Vendor Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:oxygenz:clipbucket:*:*:*:*:*:*:*:*
History

17 Jun 2026, 10:25

Type Values Removed Values Added
Summary
  • (es) ClipBucket v5 es una plataforma de código abierto para compartir videos. Antes de la versión 5.5.3 - #40, existe una vulnerabilidad de condición de carrera de Tiempo de Verificación a Tiempo de Uso (TOCTOU) en la funcionalidad de carga de avatares e imágenes de fondo de ClipBucket. La aplicación mueve los archivos cargados a una ubicación accesible desde la web antes de validarlos, creando una ventana donde un atacante puede ejecutar código PHP arbitrario antes de que el archivo sea eliminado. El archivo cargado fue movido a una ruta accesible desde la web a través de move_uploaded_file(), luego validado a través de ValidateImage(). Si la validación fallaba, el archivo era eliminado a través de @unlink(). Esta vulnerabilidad está corregida en 5.5.3 - #40.

18 Feb 2026, 15:02

Type Values Removed Values Added
CPE cpe:2.3:a:oxygenz:clipbucket:*:*:*:*:*:*:*:*
References () https://github.com/MacWarrior/clipbucket-v5/commit/09536e6e2ca6d69a2ee83190b588c0b8116dd16d - () https://github.com/MacWarrior/clipbucket-v5/commit/09536e6e2ca6d69a2ee83190b588c0b8116dd16d - Patch
References () https://github.com/MacWarrior/clipbucket-v5/security/advisories/GHSA-xq7c-m5r2-9wqj - () https://github.com/MacWarrior/clipbucket-v5/security/advisories/GHSA-xq7c-m5r2-9wqj - Exploit, Mitigation, Vendor Advisory
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 7.5
First Time Oxygenz clipbucket
Oxygenz

11 Feb 2026, 16:16

Type Values Removed Values Added
References () https://github.com/MacWarrior/clipbucket-v5/security/advisories/GHSA-xq7c-m5r2-9wqj - () https://github.com/MacWarrior/clipbucket-v5/security/advisories/GHSA-xq7c-m5r2-9wqj -

10 Feb 2026, 18:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-02-10 18:16

Updated : 2026-06-17 10:25

NVD link : CVE-2026-25728

Mitre link : CVE-2026-25728

CVE.ORG link : CVE-2026-25728

JSON object : View

Products Affected

oxygenz

  • clipbucket
CWE
CWE-367

Time-of-check Time-of-use (TOCTOU) Race Condition