{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-3995", "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "state": "PUBLISHED", "assignerShortName": "Wordfence", "dateReserved": "2026-03-11T17:04:22.771Z", "datePublished": "2026-04-16T06:44:51.340Z", "dateUpdated": "2026-04-16T06:44:51.340Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "shortName": "Wordfence", "dateUpdated": "2026-04-16T06:44:51.340Z"}, "affected": [{"vendor": "faridsaniee", "product": "OPEN-BRAIN", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "0.5.0", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "The OPEN-BRAIN plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'API Key' settings field in all versions up to, and including, 0.5.0. This is due to insufficient input sanitization and output escaping. The plugin uses sanitize_text_field() which strips HTML tags but does not encode double quotes or other HTML-special characters needed for safe attribute context output. The API key value is saved via update_option() and later output into an HTML input element's value attribute without esc_attr() escaping. This makes it possible for authenticated attackers, with Administrator-level access, to inject arbitrary web scripts via attribute breakout payloads (e.g., double quotes followed by event handlers) that execute whenever a user accesses the plugin settings page."}], "title": "OPEN-BRAIN <= 0.5.0 - Authenticated (Administrator+) Stored Cross-Site Scripting via 'API Key' Setting", "references": [{"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/3fe3fa95-cc1d-469b-8a97-37987b9ae362?source=cve"}, {"url": "https://plugins.trac.wordpress.org/browser/open-brain/trunk/index.php#L272"}, {"url": "https://plugins.trac.wordpress.org/browser/open-brain/tags/0.5.0/index.php#L272"}, {"url": "https://plugins.trac.wordpress.org/browser/open-brain/trunk/index.php#L252"}, {"url": "https://plugins.trac.wordpress.org/browser/open-brain/tags/0.5.0/index.php#L252"}, {"url": "https://plugins.trac.wordpress.org/browser/open-brain/trunk/index.php#L253"}, {"url": "https://plugins.trac.wordpress.org/browser/open-brain/tags/0.5.0/index.php#L253"}, {"url": "https://plugins.trac.wordpress.org/browser/open-brain/trunk/index.php#L128"}, {"url": "https://plugins.trac.wordpress.org/browser/open-brain/tags/0.5.0/index.php#L128"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')", "cweId": "CWE-79", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N", "baseScore": 4.4, "baseSeverity": "MEDIUM"}}], "credits": [{"lang": "en", "type": "finder", "value": "Muhammad Nur Ibnu Hubab"}], "timeline": [{"time": "2026-04-15T17:42:29.000Z", "lang": "en", "value": "Disclosed"}]}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "The OPEN-BRAIN plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'API Key' settings field in all versions up to, and including, 0.5.0. This is due to insufficient input sanitization and output escaping. The plugin uses sanitize_text_field() which strips HTML tags but does not encode double quotes or other HTML-special characters needed for safe attribute context output. The API key value is saved via update_option() and later output into an HTML input element's value attribute without esc_attr() escaping. This makes it possible for authenticated attackers, with Administrator-level access, to inject arbitrary web scripts via attribute breakout payloads (e.g., double quotes followed by event handlers) that execute whenever a user accesses the plugin settings page."}], "id": "CVE-2026-3995", "lastModified": "2026-04-16T07:16:30.503", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "HIGH", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 1.3, "impactScore": 2.7, "source": "security@wordfence.com", "type": "Primary"}]}, "published": "2026-04-16T07:16:30.503", "references": [{"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/open-brain/tags/0.5.0/index.php#L128"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/open-brain/tags/0.5.0/index.php#L252"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/open-brain/tags/0.5.0/index.php#L253"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/open-brain/tags/0.5.0/index.php#L272"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/open-brain/trunk/index.php#L128"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/open-brain/trunk/index.php#L252"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/open-brain/trunk/index.php#L253"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/open-brain/trunk/index.php#L272"}, {"source": "security@wordfence.com", "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/3fe3fa95-cc1d-469b-8a97-37987b9ae362?source=cve"}], "sourceIdentifier": "security@wordfence.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security@wordfence.com", "type": "Primary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,0.5.0]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "OPEN-BRAIN", "source": "cna", "vendor": "faridsaniee"}, "product": "open-brain", "vendor": "faridsaniee"}, {"configurations": [{"platform": null, "status": "unaffected", "versions": null}], "enrichment": {"confidence": 80.0, "confidence_source": "inferred", "scores": [{"score": 80.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "product": "wordpress", "vendor": "wordpress"}], "created": "2026-04-16T09:11:39.404777+00:00", "updated": "2026-04-16T09:11:39.404874+00:00", "vendors": ["faridsaniee", "faridsaniee$PRODUCT$open-brain", "wordpress", "wordpress$PRODUCT$wordpress"]}