CVE-2025-8561

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-8561", "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "state": "PUBLISHED", "assignerShortName": "Wordfence", "dateReserved": "2025-08-04T18:43:17.581Z", "datePublished": "2025-10-15T05:23:49.080Z", "dateUpdated": "2026-04-08T17:27:19.749Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "shortName": "Wordfence", "dateUpdated": "2026-04-08T17:27:19.749Z"}, "affected": [{"vendor": "ovatheme", "product": "Ova Advent", "versions": [{"version": "0", "status": "affected", "lessThanOrEqual": "1.1.7", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "The Ova Advent plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's shortcodes in all versions up to, and including, 1.1.7 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page."}], "title": "Ova Advent <= 1.1.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode", "references": [{"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/da6bf521-0c22-4839-8fa6-a0d67e28cfbd?source=cve"}, {"url": "https://themeforest.net/item/em4u-event-management-multipurpose-wordpress-theme/20846579"}, {"url": "https://themeforest.net/item/em4u-event-management-multipurpose-wordpress-theme/20846579#item-description__change_log"}], "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-87 Improper Neutralization of Alternate XSS Syntax", "cweId": "CWE-87", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "baseScore": 6.4, "baseSeverity": "MEDIUM"}}], "credits": [{"lang": "en", "type": "finder", "value": "Marco Wotschka"}], "timeline": [{"time": "2025-08-04T18:56:13.000Z", "lang": "en", "value": "Vendor Notified"}, {"time": "2025-10-14T16:42:57.000Z", "lang": "en", "value": "Disclosed"}]}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2025-10-15T17:47:04.704751Z", "id": "CVE-2025-8561", "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": "2025-10-15T17:56:14.837Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2025-8561", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2025-10-15T17:47:04.704751Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-10-15T17:48:45.593Z"}}], "cna": {"title": "Ova Advent <= 1.1.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode", "credits": [{"lang": "en", "type": "finder", "value": "Marco Wotschka"}], "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 6.4, "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N"}}], "affected": [{"vendor": "ovatheme", "product": "Ova Advent", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "1.1.7"}], "defaultStatus": "unaffected"}], "timeline": [{"lang": "en", "time": "2025-08-04T18:56:13.000Z", "value": "Vendor Notified"}, {"lang": "en", "time": "2025-10-14T16:42:57.000Z", "value": "Disclosed"}], "references": [{"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/da6bf521-0c22-4839-8fa6-a0d67e28cfbd?source=cve"}, {"url": "https://themeforest.net/item/em4u-event-management-multipurpose-wordpress-theme/20846579"}, {"url": "https://themeforest.net/item/em4u-event-management-multipurpose-wordpress-theme/20846579#item-description__change_log"}], "descriptions": [{"lang": "en", "value": "The Ova Advent plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's shortcodes in all versions up to, and including, 1.1.7 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-87", "description": "CWE-87 Improper Neutralization of Alternate XSS Syntax"}]}], "providerMetadata": {"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "shortName": "Wordfence", "dateUpdated": "2026-04-08T17:27:19.749Z"}}}, "cveMetadata": {"cveId": "CVE-2025-8561", "state": "PUBLISHED", "dateUpdated": "2026-04-08T17:27:19.749Z", "dateReserved": "2025-08-04T18:43:17.581Z", "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599", "datePublished": "2025-10-15T05:23:49.080Z", "assignerShortName": "Wordfence"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "Ova Advent", "vendor": "ovatheme", "versions": [{"lessThanOrEqual": "1.1.7", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "security@wordfence.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The Ova Advent plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's shortcodes in all versions up to, and including, 1.1.7 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page."}, {"lang": "es", "value": "El plugin Ova Advent para WordPress es vulnerable a cross-site scripting almacenado a trav\u00e9s de los shortcodes del plugin en todas las versiones hasta la 1.1.7, inclusive, debido a una sanitizaci\u00f3n de entrada y un escape de salida insuficientes en los atributos proporcionados por el usuario. Esto hace posible que atacantes autenticados, con acceso de nivel de colaborador y superior, inyecten scripts web arbitrarios en p\u00e1ginas que se ejecutar\u00e1n cada vez que un usuario acceda a una p\u00e1gina inyectada."}], "id": "CVE-2025-8561", "lastModified": "2026-10-08T12:10:00.217", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 3.1, "impactScore": 2.7, "source": "security@wordfence.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-8561", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-10-15T17:47:04.704751Z", "version": "2.0.3"}}]}, "published": "2025-10-15T06:15:46.203", "references": [{"source": "security@wordfence.com", "url": "https://themeforest.net/item/em4u-event-management-multipurpose-wordpress-theme/20846579"}, {"source": "security@wordfence.com", "url": "https://themeforest.net/item/em4u-event-management-multipurpose-wordpress-theme/20846579#item-description__change_log"}, {"source": "security@wordfence.com", "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/da6bf521-0c22-4839-8fa6-a0d67e28cfbd?source=cve"}], "sourceIdentifier": "security@wordfence.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-87"}], "source": "security@wordfence.com", "type": "Secondary"}]}

{}

{"analysis": {"en": {"generated_at": "2026-04-20T19:09:46.688311+00:00", "value": {"mitigation_remediation": ["Update the Ova Advent plugin to any version newer than 1.1.7. ", "If an immediate update is not possible, remove the plugin from sites where contributor roles exist or restrict contributors from adding shortcodes. ", "Implement a Web Application Firewall rule that blocks or sanitizes script tags in shortcode attributes. "], "summary": {"action": "Patch", "impact": "Stored Cross\u2011Site Scripting via shortcodes (authenticated contributor+)."}, "threat_synthesis": {"affected_systems": "All WordPress sites that use the Ova Advent plugin version 1.1.7 or earlier are vulnerable. The plugin is distributed by ovatheme under the name Ova Advent. Administrators should verify the installed version and upgrade if it is affected.", "description_and_impact": "The Ova Advent plugin for WordPress contains a stored cross\u2011site scripting flaw. In all versions up to and including 1.1.7 the plugin does not properly escape or sanitize user\u2011supplied shortcode attributes. An attacker with contributor\u2011level or higher permissions can insert arbitrary JavaScript. When a user visits the page that includes the malicious shortcode, the script runs in the victim\u2019s browser with that user\u2019s privileges, allowing cookie theft, session hijacking, phishing or defacement. This weakness is an instance of improper input validation (CWE\u201187).", "risk_and_exploitability": "The CVSS score of 6.4 indicates a medium severity, while the EPSS score of less than 1% reflects a very low current exploitation probability. The vulnerability is not listed in the CISA KEV catalog. Attackers must have authenticated contributor+ access, so the primary vector is an existing compromised account or insider. Once injected, any user who views the affected page can become a target, exposing session data or enabling further malicious actions. No public exploits are currently documented, but the low EPSS does not diminish the risk of exploitation in environments where contributor access is widespread."}}}}, "created": "2025-10-20T13:27:10.396298+00:00", "updated": "2026-04-20T19:15:15.047514+00:00", "vendors": ["wordpress", "wordpress$PRODUCT$wordpress"]}