CVE-2026-89138
The Filter Gallery plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.1.4. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to overwrite the title and content of arbitrary WordPress posts, write the _wp_attachment_image_alt meta key on arbitrary posts, and create or overwrite arbitrary ufg_gallery_* options.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- Puntuación base: 4.3
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.39%
- Percentil entre todas las CVEs puntuadas: 31
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1210Exploitation of Remote Serviceslateral movement65 % - Impacto principal
T1565.001Stored Data Manipulationimpact75 %
Plugin WordPress no verifica autorización (CWE-862), permitiendo a usuarios autenticados (PR:L) sobrescribir posts, metadatos y opciones. Explotación de servicio remoto con credenciales débiles; impacto en manipulación de datos y configuración.
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (1)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
CWE
- CWE-862
Referencias
- https://plugins.trac.wordpress.org/browser/filter-gallery/tags/1.1.4/filter-gallery.php#L843
- https://plugins.trac.wordpress.org/browser/filter-gallery/tags/1.1.4/filter-gallery.php#L845
- https://plugins.trac.wordpress.org/browser/filter-gallery/tags/1.1.4/filter-gallery.php#L884
- https://plugins.trac.wordpress.org/browser/filter-gallery/tags/1.1.4/filter-gallery.php#L885
- https://plugins.trac.wordpress.org/browser/filter-gallery/tags/1.1.4/filter-gallery.php#L902
- https://plugins.trac.wordpress.org/changeset?reponame=&old=3695415%40filter-gallery&new=3695415%40filter-gallery
- https://www.wordfence.com/threat-intel/vulnerabilities/id/73577a0d-8aac-4369-8022-98c198f79224?source=cve
JSON original (NVD)
Mostrar
{
"id": "CVE-2026-89138",
"cveTags": [],
"metrics": {
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-89138",
"role": "CISA Coordinator",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"version": "2.0.3",
"timestamp": "2026-09-18T14:17:58.488796Z"
}
}
],
"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": "farazfrank",
"product": "Filter Gallery",
"versions": [
{
"status": "affected",
"version": "0",
"versionType": "semver",
"lessThanOrEqual": "1.1.4"
}
],
"defaultStatus": "unaffected"
}
]
}
],
"published": "2026-09-18T07:16:50.907",
"references": [
{
"url": "https://plugins.trac.wordpress.org/browser/filter-gallery/tags/1.1.4/filter-gallery.php#L843",
"source": "security@wordfence.com"
},
{
"url": "https://plugins.trac.wordpress.org/browser/filter-gallery/tags/1.1.4/filter-gallery.php#L845",
"source": "security@wordfence.com"
},
{
"url": "https://plugins.trac.wordpress.org/browser/filter-gallery/tags/1.1.4/filter-gallery.php#L884",
"source": "security@wordfence.com"
},
{
"url": "https://plugins.trac.wordpress.org/browser/filter-gallery/tags/1.1.4/filter-gallery.php#L885",
"source": "security@wordfence.com"
},
{
"url": "https://plugins.trac.wordpress.org/browser/filter-gallery/tags/1.1.4/filter-gallery.php#L902",
"source": "security@wordfence.com"
},
{
"url": "https://plugins.trac.wordpress.org/changeset?reponame=&old=3695415%40filter-gallery&new=3695415%40filter-gallery",
"source": "security@wordfence.com"
},
{
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/73577a0d-8aac-4369-8022-98c198f79224?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 Filter Gallery plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 1.1.4. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to overwrite the title and content of arbitrary WordPress posts, write the _wp_attachment_image_alt meta key on arbitrary posts, and create or overwrite arbitrary ufg_gallery_* options."
}
],
"lastModified": "2026-09-18T15:17:17.767",
"sourceIdentifier": "security@wordfence.com"
}