{"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"}}]}}