CVE-2026-19801

{"id": "CVE-2026-19801", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-19801", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-25T18:32:47.984379Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security@wordfence.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security@wordfence.com", "affectedData": [{"vendor": "wpdevteam", "product": "BetterLinks \u2013 Link Shortener, Link Cloaking, Redirects, Affiliate Link Manager & MCP", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "3.1.0"}], "defaultStatus": "unaffected"}]}], "published": "2026-08-25T02:16:40.250", "references": [{"url": "https://plugins.trac.wordpress.org/browser/betterlinks/tags/3.0.0/betterlinks.php#L254", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/betterlinks/tags/3.0.0/includes/Admin/Ajax.php#L180", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/betterlinks/tags/3.0.0/includes/Admin/Ajax.php#L99", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/betterlinks/tags/3.1.0/betterlinks.php#L254", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/betterlinks/tags/3.1.0/includes/Admin/Ajax.php#L180", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/betterlinks/tags/3.1.0/includes/Admin/Ajax.php#L99", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/changeset?reponame=&old=3658390%40betterlinks&new=3658390%40betterlinks", "source": "security@wordfence.com"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/faf44730-b975-4057-96dc-7284775500f9?source=cve", "source": "security@wordfence.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security@wordfence.com", "description": [{"lang": "en", "value": "CWE-862"}]}], "descriptions": [{"lang": "en", "value": "The BetterLinks \u2013 Link Shortener, Link Cloaking, Redirects, Affiliate Link Manager & MCP plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 3.1.0. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to create arbitrary BetterLinks short URLs with attacker-controlled slugs and redirect destinations, enabling phishing and SEO abuse. Exploitation requires the Fluent Boards companion plugin to be installed and active (so that the FLUENT_BOARDS constant is defined), and is further facilitated by the betterlinks_admin_nonce nonce being emitted on every frontend page via wp_localize_script, making it accessible to any authenticated user."}, {"lang": "es", "value": "El plugin BetterLinks - Link Shortener, Link Cloaking, Redirects, Affiliate Link Manager & MCP para WordPress es vulnerable a una omisi\u00f3n de autorizaci\u00f3n en todas las versiones hasta la 3.1.0, inclusive. Esto se debe a que el plugin no verifica correctamente que un usuario est\u00e1 autorizado para realizar una acci\u00f3n. Esto hace posible que atacantes autenticados, con acceso de nivel de suscriptor y superior, creen URLs cortas arbitrarias de BetterLinks con slugs controlados por el atacante y destinos de redirecci\u00f3n, lo que permite el phishing y el abuso de SEO. La explotaci\u00f3n requiere que el plugin complementario Fluent Boards est\u00e9 instalado y activo (para que la constante FLUENT_BOARDS est\u00e9 definida), y se facilita a\u00fan m\u00e1s por el nonce betterlinks_admin_nonce siendo emitido en cada p\u00e1gina de frontend a trav\u00e9s de wp_localize_script, haci\u00e9ndolo accesible a cualquier usuario autenticado."}], "lastModified": "2026-10-12T15:10:00.207", "sourceIdentifier": "security@wordfence.com"}