CVE-2026-16145

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-16145", "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "state": "PUBLISHED", "assignerShortName": "Wordfence", "dateReserved": "2026-07-17T17:46:28.334Z", "datePublished": "2026-08-15T03:25:59.974Z", "dateUpdated": "2026-08-18T19:38:54.953Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "shortName": "Wordfence", "dateUpdated": "2026-08-15T03:25:59.974Z"}, "affected": [{"vendor": "matthiasnordwig", "product": "Invisible Anti-Spam & CAPTCHA \u2014 reCAPTCHA Alternative for All Forms", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "5.1", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "The Invisible Anti-Spam & CAPTCHA \u2014 reCAPTCHA Alternative for All Forms plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'action' parameter in all versions up to, and including, 5.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The stored payload is written by any unauthenticated admin-ajax.php request whose action value matches an entry in the plugin's explicit-actions list, which is auto-populated for common form builders at activation and requires no authentication gate to reach the save path."}], "title": "Invisible Anti-Spam & CAPTCHA <= 5.1 - Unauthenticated Stored Cross-Site Scripting via 'action' Parameter", "references": [{"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/ff1d2bd8-cc46-4763-8ba7-832b982ff56a?source=cve"}, {"url": "https://plugins.trac.wordpress.org/browser/gdpr-compliant-recaptcha-for-all-forms/tags/5.0/includes/class-message-page.php#L621"}, {"url": "https://plugins.trac.wordpress.org/browser/gdpr-compliant-recaptcha-for-all-forms/tags/5.0/includes/class-stamp.php#L136"}, {"url": "https://plugins.trac.wordpress.org/browser/gdpr-compliant-recaptcha-for-all-forms/tags/5.0/includes/class-stamp.php#L771"}, {"url": "https://plugins.trac.wordpress.org/changeset/3633500/gdpr-compliant-recaptcha-for-all-forms"}], "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:L/PR:N/UI:N/S:C/C:L/I:L/A:N", "baseScore": 7.2, "baseSeverity": "HIGH"}}], "credits": [{"lang": "en", "type": "finder", "value": "Ivaylo"}], "timeline": [{"time": "2026-08-10T21:18:18.000Z", "lang": "en", "value": "Vendor Notified"}, {"time": "2026-08-14T15:08:15.000Z", "lang": "en", "value": "Disclosed"}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-08-18T19:38:41.974606Z", "id": "CVE-2026-16145", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"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": "2026-08-18T19:38:54.953Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-16145", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-18T19:38:41.974606Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-18T19:38:48.159Z"}}], "cna": {"title": "Invisible Anti-Spam & CAPTCHA <= 5.1 - Unauthenticated Stored Cross-Site Scripting via 'action' Parameter", "credits": [{"lang": "en", "type": "finder", "value": "Ivaylo"}], "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 7.2, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N"}}], "affected": [{"vendor": "matthiasnordwig", "product": "Invisible Anti-Spam & CAPTCHA \u2014 reCAPTCHA Alternative for All Forms", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "5.1"}], "defaultStatus": "unaffected"}], "timeline": [{"lang": "en", "time": "2026-08-10T21:18:18.000Z", "value": "Vendor Notified"}, {"lang": "en", "time": "2026-08-14T15:08:15.000Z", "value": "Disclosed"}], "references": [{"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/ff1d2bd8-cc46-4763-8ba7-832b982ff56a?source=cve"}, {"url": "https://plugins.trac.wordpress.org/browser/gdpr-compliant-recaptcha-for-all-forms/tags/5.0/includes/class-message-page.php#L621"}, {"url": "https://plugins.trac.wordpress.org/browser/gdpr-compliant-recaptcha-for-all-forms/tags/5.0/includes/class-stamp.php#L136"}, {"url": "https://plugins.trac.wordpress.org/browser/gdpr-compliant-recaptcha-for-all-forms/tags/5.0/includes/class-stamp.php#L771"}, {"url": "https://plugins.trac.wordpress.org/changeset/3633500/gdpr-compliant-recaptcha-for-all-forms"}], "descriptions": [{"lang": "en", "value": "The Invisible Anti-Spam & CAPTCHA \u2014 reCAPTCHA Alternative for All Forms plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'action' parameter in all versions up to, and including, 5.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The stored payload is written by any unauthenticated admin-ajax.php request whose action value matches an entry in the plugin's explicit-actions list, which is auto-populated for common form builders at activation and requires no authentication gate to reach the save path."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-79", "description": "CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')"}]}], "providerMetadata": {"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "shortName": "Wordfence", "dateUpdated": "2026-08-15T03:25:59.974Z"}}}, "cveMetadata": {"cveId": "CVE-2026-16145", "state": "PUBLISHED", "dateUpdated": "2026-08-18T19:38:54.953Z", "dateReserved": "2026-07-17T17:46:28.334Z", "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "datePublished": "2026-08-15T03:25:59.974Z", "assignerShortName": "Wordfence"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Invisible Anti-Spam & CAPTCHA \u2014 reCAPTCHA Alternative for All Forms", "vendor": "matthiasnordwig", "versions": [{"lessThanOrEqual": "5.1", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "security@wordfence.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The Invisible Anti-Spam & CAPTCHA \u2014 reCAPTCHA Alternative for All Forms plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'action' parameter in all versions up to, and including, 5.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The stored payload is written by any unauthenticated admin-ajax.php request whose action value matches an entry in the plugin's explicit-actions list, which is auto-populated for common form builders at activation and requires no authentication gate to reach the save path."}], "id": "CVE-2026-16145", "lastModified": "2026-08-20T12:48:10.287", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 7.2, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 2.7, "source": "security@wordfence.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-16145", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-18T19:38:41.974606Z", "version": "2.0.3"}}]}, "published": "2026-08-15T04:18:10.233", "references": [{"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/gdpr-compliant-recaptcha-for-all-forms/tags/5.0/includes/class-message-page.php#L621"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/gdpr-compliant-recaptcha-for-all-forms/tags/5.0/includes/class-stamp.php#L136"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/browser/gdpr-compliant-recaptcha-for-all-forms/tags/5.0/includes/class-stamp.php#L771"}, {"source": "security@wordfence.com", "url": "https://plugins.trac.wordpress.org/changeset/3633500/gdpr-compliant-recaptcha-for-all-forms"}, {"source": "security@wordfence.com", "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/ff1d2bd8-cc46-4763-8ba7-832b982ff56a?source=cve"}], "sourceIdentifier": "security@wordfence.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "security@wordfence.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,5.1]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "cna", "scores": [{"score": 100.0, "source": "cna"}]}, "original": {"product": "Invisible Anti-Spam & CAPTCHA \u2014 reCAPTCHA Alternative for All Forms", "source": "cna", "vendor": "matthiasnordwig"}, "product": "invisible_anti-spam_&_captcha_\u2014_recaptcha_alternative_for_all_forms", "vendor": "matthiasnordwig"}, {"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": "2026-08-15T04:30:02.792500+00:00", "updated": "2026-08-17T10:59:38.438591+00:00", "vendors": ["matthiasnordwig", "matthiasnordwig$PRODUCT$invisible_anti-spam_&_captcha_\u2014_recaptcha_alternative_for_all_forms", "wordpress", "wordpress$PRODUCT$wordpress"]}