{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-4139",
        "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
        "state": "PUBLISHED",
        "assignerShortName": "Wordfence",
        "dateReserved": "2026-03-13T15:29:31.027Z",
        "datePublished": "2026-04-22T07:45:36.467Z",
        "dateUpdated": "2026-04-22T15:31:40.591Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
                "shortName": "Wordfence",
                "dateUpdated": "2026-04-22T07:45:36.467Z"
            },
            "affected": [
                {
                    "vendor": "chsxf",
                    "product": "mCatFilter",
                    "versions": [
                        {
                            "version": "0",
                            "status": "affected",
                            "lessThanOrEqual": "0.5.2",
                            "versionType": "semver"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }
            ],
            "descriptions": [
                {
                    "lang": "en",
                    "value": "The mCatFilter plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to and including 0.5.2. This is due to the complete absence of nonce verification and capability checks in the compute_post() function, which processes settings updates. The compute_post() function is called in the plugin constructor on every page load via the plugins_loaded hook, and it directly processes $_POST data to modify plugin settings via update_option() without any CSRF token validation. This makes it possible for unauthenticated attackers to modify all plugin settings, including category exclusion rules, feed exclusion flags, and tag page exclusion flags, via a forged POST request, granted they can trick a site administrator into performing an action such as clicking a link."
                }
            ],
            "title": "mCatFilter <= 0.5.2 - Cross-Site Request Forgery via compute_post() Function",
            "references": [
                {
                    "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/622ee6c8-7739-44ae-b88f-63a93c0a9b20?source=cve"
                },
                {
                    "url": "https://plugins.trac.wordpress.org/browser/mcatfilter/trunk/mcatfilter.php#L339"
                },
                {
                    "url": "https://plugins.trac.wordpress.org/browser/mcatfilter/tags/0.5.2/mcatfilter.php#L339"
                },
                {
                    "url": "https://plugins.trac.wordpress.org/browser/mcatfilter/trunk/mcatfilter.php#L320"
                },
                {
                    "url": "https://plugins.trac.wordpress.org/browser/mcatfilter/tags/0.5.2/mcatfilter.php#L320"
                },
                {
                    "url": "https://plugins.trac.wordpress.org/browser/mcatfilter/trunk/mcatfilter.php#L138"
                },
                {
                    "url": "https://plugins.trac.wordpress.org/browser/mcatfilter/tags/0.5.2/mcatfilter.php#L138"
                }
            ],
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "description": "CWE-352 Cross-Site Request Forgery (CSRF)",
                            "cweId": "CWE-352",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N",
                        "baseScore": 4.3,
                        "baseSeverity": "MEDIUM"
                    }
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "type": "finder",
                    "value": "Muhammad Afnaan"
                }
            ],
            "timeline": [
                {
                    "time": "2026-04-21T19:06:04.000Z",
                    "lang": "en",
                    "value": "Disclosed"
                }
            ]
        },
        "adp": [
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-04-22T15:25:46.505397Z",
                                "id": "CVE-2026-4139",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-04-22T15:31:40.591Z"
                }
            }
        ]
    }
}