Fiber Utils UUIDv4 and UUID Silent Fallback to Predictable Values_CVE-2025-66565

{
    "lastseen": "",
    "description": "Fiber Utils is a collection of common functions created for Fiber. In versions 2.0.0-rc.3 and below, when the system's cryptographic random number generator (crypto/rand) fails, both functions silently fall back to returning predictable UUID values, including the zero UUID \"00000000-0000-0000-0000-000000000000\". The vulnerability occurs through two related but distinct failure paths, both ultimately caused by crypto/rand.Read() failures, compromising the security of all Fiber applications using these functions for security-critical operations. This issue is fixed in version 2.0.0-rc.4.",
    "published": "2025-12-09T01:47:58.430Z",
    "modified": "2025-12-09T01:47:58.430Z",
    "type": "cve",
    "title": "Fiber Utils UUIDv4 and UUID Silent Fallback to Predictable Values",
    "source": "GitHub_M",
    "references": "https://github.com/gofiber/utils/security/advisories/GHSA-m98w-cqp3-qcqr\nhttps://github.com/gofiber/utils/commit/6c6cf047032b9c8dff43d29f990b4b10e9b02d47",
    "id": "CVE-2025-66565",
    "bulletinFamily": "",
    "cwe": [
        "CWE-252",
        "CWE-331",
        "CWE-338"
    ],
    "cvelist": null,
    "sourceData": "gofiber utils github.com/gofiber/utils <= 1.2.0\ngofiber utils github.com/gofiber/utils/v2 < 2.0.0-rc.4",
    "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:L/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": "utils",
    "version": "github.com/gofiber/utils <= 1.2.0",
    "vendor": "gofiber",
    "ai_description": "Fiber Utils UUIDv4 and UUID Silent Fallback to Predictable Values due to crypto/rand.Read() failures",
    "ai_severity": "CRITICAL",
    "ai_vendor": "Fiber",
    "ai_product": "Fiber Utils",
    "ai_version": "<= 1.2.0, < 2.0.0-rc.4",
    "ai_score": 9.3
}