CVE-2026-0691

{"id": "CVE-2026-0691", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "security@wordfence.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 4.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "NONE", "privilegesRequired": "HIGH", "confidentialityImpact": "LOW"}, "impactScore": 2.7, "exploitabilityScore": 1.3}]}, "published": "2026-01-17T07:16:01.933", "references": [{"url": "https://plugins.trac.wordpress.org/browser/cm-email-blacklist/tags/1.6.2/backend/views/settings/email_blacklist.phtml#L67", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/browser/cm-email-blacklist/trunk/backend/views/settings/email_blacklist.phtml#L67", "source": "security@wordfence.com"}, {"url": "https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3440158%40cm-email-blacklist&new=3440158%40cm-email-blacklist&sfp_email=&sfph_mail=", "source": "security@wordfence.com"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/821f4ea9-bc25-4d65-9058-5b77c4f1b230?source=cve", "source": "security@wordfence.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Primary", "source": "security@wordfence.com", "description": [{"lang": "en", "value": "CWE-79"}]}], "descriptions": [{"lang": "en", "value": "The CM E-Mail Blacklist \u2013 Simple email filtering for safer registration plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'black_email' parameter in all versions up to, and including, 1.6.2. This is due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled."}], "lastModified": "2026-01-26T15:05:39.840", "sourceIdentifier": "security@wordfence.com"}