CVE-2026-2518

The FastX theme for WordPress is vulnerable to unauthorized limited plugin installation and activation due to missing capability checks on the 'ultp_install_callback' and 'ultp_activate_callback' functions in all versions up to, and including, 1.0.2. This makes it possible for authenticated attackers, with Subscriber-level access and above, to install and activate the PostX plugin.

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://themes.trac.wordpress.org/browser/fastx/1.0.2/classes/Initialization.php#L249
https://themes.trac.wordpress.org/browser/fastx/1.0.2/classes/Initialization.php#L264
https://www.wordfence.com/threat-intel/vulnerabilities/id/6f5c4194-4f97-4f85-af90-e983ba9ce3a6?source=cve

Configurations

No configuration.

History

No history.

Information

Published : 2026-05-22 05:16

Updated : 2026-07-23 16:10

NVD link : CVE-2026-2518

Mitre link : CVE-2026-2518

CVE.ORG link : CVE-2026-2518

JSON object : View

Products Affected

No product.

CWE

CWE-862

Missing Authorization

{"id": "CVE-2026-2518", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-2518", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-22T12:21:11.744190Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security@wordfence.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 2.8}]}, "affected": [{"source": "security@wordfence.com", "affectedData": [{"vendor": "wpxpo", "product": "FastX", "versions": [{"status": "affected", "version": "0", "versionType": "semver", "lessThanOrEqual": "1.0.2"}], "defaultStatus": "unaffected"}]}], "published": "2026-05-22T05:16:24.660", "references": [{"url": "https://themes.trac.wordpress.org/browser/fastx/1.0.2/classes/Initialization.php#L249", "source": "security@wordfence.com"}, {"url": "https://themes.trac.wordpress.org/browser/fastx/1.0.2/classes/Initialization.php#L264", "source": "security@wordfence.com"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/6f5c4194-4f97-4f85-af90-e983ba9ce3a6?source=cve", "source": "security@wordfence.com"}], "vulnStatus": "Deferred", "weaknesses": [{"type": "Secondary", "source": "security@wordfence.com", "description": [{"lang": "en", "value": "CWE-862"}]}], "descriptions": [{"lang": "en", "value": "The FastX theme for WordPress is vulnerable to unauthorized limited plugin installation and activation due to missing capability checks on the 'ultp_install_callback' and 'ultp_activate_callback' functions in all versions up to, and including, 1.0.2. This makes it possible for authenticated attackers, with Subscriber-level access and above, to install and activate the PostX plugin."}, {"lang": "es", "value": "El tema FastX para WordPress es vulnerable a la instalaci\u00f3n y activaci\u00f3n limitada y no autorizada de plugins debido a la falta de comprobaciones de capacidad en las funciones 'ultp_install_callback' y 'ultp_activate_callback' en todas las versiones hasta la 1.0.2, inclusive. Esto hace posible que atacantes autenticados, con acceso de nivel Suscriptor y superior, instalen y activen el plugin PostX."}], "lastModified": "2026-07-23T16:10:00.137", "sourceIdentifier": "security@wordfence.com"}