RubyLouvre avalon Template Filter index.js prototype pollution_CVE-2026-12209

6.9 / 10

MEDIUM

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P

Description

A security vulnerability has been detected in RubyLouvre avalon up to 2.2.10. The impacted element is an unknown function of the file src/filters/index.js of the component Template Filter Handler. Such manipulation leads to improperly controlled modification of object prototype attributes. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Basic Information

ID CVE-2026-12209

Source VulDB

Published Jun 15, 2026 at 02:15

Affected Product

Vendor RubyLouvre

Product avalon

Version 2.2.0

Affected Versions RubyLouvre avalon 2.2.0
RubyLouvre avalon 2.2.1
RubyLouvre avalon 2.2.2
RubyLouvre avalon 2.2.3
RubyLouvre avalon 2.2.4
RubyLouvre avalon 2.2.5
RubyLouvre avalon 2.2.6
RubyLouvre avalon 2.2.7
RubyLouvre avalon 2.2.8
RubyLouvre avalon 2.2.9
RubyLouvre avalon 2.2.10

CWE Classification

CWE-1321 CWE-94

References

{
    "lastseen": "",
    "description": "A security vulnerability has been detected in RubyLouvre avalon up to 2.2.10. The impacted element is an unknown function of the file src/filters/index.js of the component Template Filter Handler. Such manipulation leads to improperly controlled modification of object prototype attributes. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.",
    "published": "2026-06-15T02:15:07.361Z",
    "modified": "2026-06-15T02:15:07.361Z",
    "type": "cve",
    "title": "RubyLouvre avalon Template Filter index.js prototype pollution",
    "source": "VulDB",
    "references": "https://vuldb.com/vuln/370851\nhttps://vuldb.com/vuln/370851/cti\nhttps://vuldb.com/cve/CVE-2026-12209\nhttps://vuldb.com/submit/832447\nhttps://github.com/OriginSecurityX/avalon-filter-rce",
    "id": "CVE-2026-12209",
    "bulletinFamily": "",
    "cwe": [
        "CWE-1321",
        "CWE-94"
    ],
    "cvelist": null,
    "sourceData": "RubyLouvre avalon 2.2.0\nRubyLouvre avalon 2.2.1\nRubyLouvre avalon 2.2.2\nRubyLouvre avalon 2.2.3\nRubyLouvre avalon 2.2.4\nRubyLouvre avalon 2.2.5\nRubyLouvre avalon 2.2.6\nRubyLouvre avalon 2.2.7\nRubyLouvre avalon 2.2.8\nRubyLouvre avalon 2.2.9\nRubyLouvre avalon 2.2.10",
    "sourceHref": "",
    "cvss": {
        "score": 6.9,
        "severity": "MEDIUM",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P",
        "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": "avalon",
    "version": "2.2.0",
    "vendor": "RubyLouvre",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}