🛡️ CVE-2026-25728
🟠 CVSS 7.5 — High ⚠️ Exploit Public CWE-367 NVD
7.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

Details

Severity HIGH
CVSS Score 7.5
CVSS Vector CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE CWE-367
Public Exploit ⚠️ Yes
Source NVD
Published 2026-02-10
Updated 2026-06-02
Modified 2026-02-18

Affected Packages

Software From version Fixed in
clipbucket 5.3 5.5.3-40

Similar Threats

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