CVE-2023-6809

The Custom fields shortcode plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's cf shortcode in all versions up to, and including, 0.1 due to insufficient input sanitization and output escaping on user supplied custom post meta values. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

CVSS v3 6.4 MEDIUM

6.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.1 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://wordpress.org/plugins/beepress/	Not Applicable
https://www.wordfence.com/threat-intel/vulnerabilities/id/99d3d5aa-dd82-415a-bc40-9d2c677d9248?source=cve	Third Party Advisory
https://wordpress.org/plugins/beepress/	Not Applicable
https://www.wordfence.com/threat-intel/vulnerabilities/id/99d3d5aa-dd82-415a-bc40-9d2c677d9248?source=cve	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:gonahkar:custom_fields_shortcode:0.1:*:*:*:*:wordpress:*:*

History

No history.

Information

Published : 2024-03-13 16:15

Updated : 2026-06-17 06:51

NVD link : CVE-2023-6809

Mitre link : CVE-2023-6809

CVE.ORG link : CVE-2023-6809

JSON object : View

Products Affected

gonahkar

custom_fields_shortcode

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

{"id": "CVE-2023-6809", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2023-6809", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2024-03-13T18:40:26.705245Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security@wordfence.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 2.7, "exploitabilityScore": 3.1}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 5.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "LOW"}, "impactScore": 2.7, "exploitabilityScore": 2.3}]}, "affected": [{"source": "security@wordfence.com", "affectedData": [{"vendor": "gonahkar", "product": "Custom fields shortcode", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "0.1"}], "defaultStatus": "unaffected"}]}], "published": "2024-03-13T16:15:08.640", "references": [{"url": "https://wordpress.org/plugins/beepress/", "tags": ["Not Applicable"], "source": "security@wordfence.com"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/99d3d5aa-dd82-415a-bc40-9d2c677d9248?source=cve", "tags": ["Third Party Advisory"], "source": "security@wordfence.com"}, {"url": "https://wordpress.org/plugins/beepress/", "tags": ["Not Applicable"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/99d3d5aa-dd82-415a-bc40-9d2c677d9248?source=cve", "tags": ["Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "security@wordfence.com", "description": [{"lang": "en", "value": "CWE-79"}]}, {"type": "Secondary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-79"}]}], "descriptions": [{"lang": "en", "value": "The Custom fields shortcode plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's cf shortcode in all versions up to, and including, 0.1 due to insufficient input sanitization and output escaping on user supplied custom post meta values. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page."}, {"lang": "es", "value": "El complemento Custom fields shortcode para WordPress es vulnerable a Cross-Site Scripting Almacenado a trav\u00e9s del c\u00f3digo abreviado cf del complemento en todas las versiones hasta la 0.1 incluida debido a una sanitizaci\u00f3n de entrada insuficiente y a un escape de salida en los metavalores de publicaci\u00f3n personalizados proporcionados por el usuario. Esto hace posible que atacantes autenticados con permisos de nivel de colaborador y superiores inyecten scripts web arbitrarios en p\u00e1ginas que se ejecutar\u00e1n cada vez que un usuario acceda a una p\u00e1gina inyectada."}], "lastModified": "2026-06-17T06:51:28.020", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:gonahkar:custom_fields_shortcode:0.1:*:*:*:*:wordpress:*:*", "vulnerable": true, "matchCriteriaId": "977809B3-DAE5-4640-9717-E26FBAD91B9A"}], "operator": "OR"}]}], "sourceIdentifier": "security@wordfence.com"}