ClipBucket v5 Affected by Remote Code Execution via Avatar/Background File Upload Race Condition_CVE-2026-25728

{
    "lastseen": "",
    "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.",
    "published": "2026-02-10T17:12:04.491Z",
    "modified": "2026-02-10T17:12:04.491Z",
    "type": "cve",
    "title": "ClipBucket v5 Affected by Remote Code Execution via Avatar/Background File Upload Race Condition",
    "source": "GitHub_M",
    "references": "https://github.com/MacWarrior/clipbucket-v5/security/advisories/GHSA-xq7c-m5r2-9wqj\nhttps://github.com/MacWarrior/clipbucket-v5/commit/09536e6e2ca6d69a2ee83190b588c0b8116dd16d",
    "id": "CVE-2026-25728",
    "bulletinFamily": "",
    "cwe": [
        "CWE-367"
    ],
    "cvelist": null,
    "sourceData": "MacWarrior clipbucket-v5 < 5.5.3 - #40",
    "sourceHref": "",
    "cvss": {
        "score": 9.3,
        "severity": "CRITICAL",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "clipbucket-v5",
    "version": "< 5.5.3 - #40",
    "vendor": "MacWarrior",
    "ai_description": "Time-of-Check to Time-of-Use (TOCTOU) race condition vulnerability in ClipBucket's avatar and background image upload functionality, allowing remote code execution",
    "ai_severity": "Critical",
    "ai_vendor": "MacWarrior",
    "ai_product": "ClipBucket v5",
    "ai_version": "< 5.5.3 - #40",
    "ai_score": 9.3
}