> CVE-2026-4020 [HIGH]

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PUBLISHED
2026-03-31 02:15
MODIFIED
2026-03-31 02:15
CVSS_SCORE V3
7.5
EPSS (Prob. Exploit)
73.80%
Top 0.5%
⚡ EPSS ÉLEVÉ (73.8%)
🎯 NUCLEI TEMPLATE
DATA SOURCES:
NVD 🔗 2026-03-31 CWE MITRE 🔗 2026-11-01 FIRST EPSS 🔗 2026-11-08 GITHUB 🔗 2026-11-05 NUCLEI 🔗 2026-11-08

> DESCRIPTION

The Gravity SMTP plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 2.1.4. This is due to a REST API endpoint registered at /wp-json/gravitysmtp/v1/tests/mock-data with a permission_callback that unconditionally returns true, allowing any unauthenticated visitor to access it. When the ?page=gravitysmtp-settings query parameter is appended, the plugin's register_connector_data() method populates internal connector data, causing the endpoint to return approximately 365 KB of JSON containing the full System Report. This makes it possible for unauthenticated attackers to retrieve detailed system configuration data including PHP version, loaded extensions, web server version, document root path, database server type and version, WordPress version, all active plugins with versions, active theme, WordPress configuration details, database table names, and any API keys/tokens configured in the plugin.

> AFFECTED_PRODUCTS

ℹ️ Aucun produit affecté n'a encore été publié par NVD pour cette CVE.

> CVSS V3 METRICS

CVSS_VECTOR
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EXPLOITABILITY
3.9
IMPACT
3.6

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Métrique Valeur Interprétation
AV (Vecteur d'Attaque)
Attack Vector
Network (N)
Exploit possible à distance via réseau (HTTP, API, etc.)
AC (Complexité d'Attaque)
Attack Complexity
Low (L)
Peu de conditions requises pour exploiter
PR (Privilèges Requis)
Privileges Required
None (N)
Aucune authentification requise
UI (Interaction Utilisateur)
User Interaction
None (N)
Aucune interaction utilisateur nécessaire
S (Périmètre)
Scope
Unchanged (U)
Impact reste dans le périmètre du composant compromis
C (Impact Confidentialité)
Confidentiality Impact
High (H)
Divulgation totale d'informations
I (Impact Intégrité)
Integrity Impact
None (N)
Aucune modification de données possible
A (Impact Disponibilité)
Availability Impact
None (N)
Aucune interruption de service

> RÉSUMÉ DES IMPACTS

Confidentialité
High
Divulgation totale d'informations
Intégrité
None
Aucune modification de données possible
Disponibilité
None
Aucune interruption de service

> WEAKNESSES

CWE-200

> CWE DETAILED DESCRIPTIONS

CWE-200: Exposure of Sensitive Information to an Unauthorized Actor - The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

> GITHUB SECURITY ADVISORY

GHSA-rjmp-rwj4-mv82 MODERATE

@diplodoc/search-extension allows stored XSS via Markdown file title

AFFECTED PACKAGES:
NPM / @diplodoc/search-extension
>= 1.0.0, < 3.0.5
Fixed in: 3.0.5

> NUCLEI TEMPLATES

Des templates Nuclei sont disponibles pour scanner cette vulnérabilité.

🎯
CVE-2026-4020.yaml
http/cves/2026/CVE-2026-4020.yaml
Usage: nuclei -t http/cves/2026/CVE-2026-4020.yaml -u target.com

> HISTORIQUE DES MODIFICATIONS

Première apparition
31/03/2026 02:15
Source: NVD
📊 ENRICHISSEMENT 01/04/2026 06:02
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-200: Exposure of Sensitive Information to an Unauthorized Actor - The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.
Total des modifications: 1 Dernière mise à jour: 7 months ago

> REFERENCES

https://docs.gravitysmtp.com/gravity-smtp-changelog/
https://plugins.trac.wordpress.org/browser/gravitysmtp/tags/2.1.4/vendor/gravity...
https://plugins.trac.wordpress.org/browser/gravitysmtp/tags/2.1.4/vendor/gravity...
https://plugins.trac.wordpress.org/browser/gravitysmtp/trunk/vendor/gravityforms...
https://plugins.trac.wordpress.org/browser/gravitysmtp/trunk/vendor/gravityforms...
https://www.gravityforms.com/gravity-smtp/
https://www.wordfence.com/threat-intel/vulnerabilities/id/12a296db-ecc0-409b-871...
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