> CVE-2026-55860 [MEDIUM]

« BACK_TO_HOME
PUBLISHED
2026-08-28 23:17
MODIFIED
2026-08-28 23:17
CVSS_SCORE V3
5.9
EPSS (Prob. Exploit)
0.23%
Top 87.4%
DATA SOURCES:
NVD đź”— 2026-08-29 CWE MITRE đź”— 2026-09-01 FIRST EPSS đź”— 2026-10-18 GITHUB đź”— 2026-10-29 OSV đź”— 2026-10-26

> DESCRIPTION

MariaDB Connector/R2DBC is a non-blocking MariaDB and MySQL client implemented in Java. Prior to 1.4.1, org.mariadb:r2dbc-mariadb does not gate clear-text password authentication plugins on transport encryption because the AuthenticationPlugin interface has no capability for a plugin to require a secure connection. A hostile or man-in-the-middle MariaDB server can send an AuthSwitchRequest naming mysql_clear_password or dialog (PAM) over a plain-TCP unencrypted connection, and AuthenticationFlow permits ClearPasswordPluginFlow or PamPluginFlow to return the user's password as cleartext bytes on the wire. The disclosed credentials can subsequently be used to authenticate directly to the database server. This issue is fixed in version 1.4.1.

> 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:H/PR:N/UI:N/S:U/C:H/I:N/A:N
EXPLOITABILITY
2.2
IMPACT
3.6

> MÉTRIQUES CVSS DÉTAILLÉES

CVSS:3.1/AV:N/AC:H/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
High (H)
Conditions spécifiques doivent être réunies 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-319 CWE-522

> CWE DETAILED DESCRIPTIONS

CWE-319: Cleartext Transmission of Sensitive Information - The product transmits sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors. | CWE-522: Insufficiently Protected Credentials - The product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval.

> GITHUB SECURITY ADVISORY

GHSA-c857-9x2m-cvh2 MODERATE

org.mariadb:r2dbc-mariadb vulnerable to cleartext password disclosure to a man-in-the-middle server (clear-text auth plugins not gated on a secure transport)

AFFECTED PACKAGES:
MAVEN / org.mariadb:r2dbc-mariadb
< 1.4.1
Fixed in: 1.4.1

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

MariaDB Connector/R2DBC: Cleartext password disclosure to a man-in-the-middle server (clear-text auth plugins not gated on a secure transport)

AFFECTED PACKAGES:
Unknown / Unknown
9 versions affected
ALIASES:
GHSA-c857-9x2m-cvh2

> HISTORIQUE DES MODIFICATIONS

Première apparition
28/08/2026 23:17
Source: NVD
📊 ENRICHISSEMENT 01/09/2026 06:02
CWE
Champ modifié: Description CWE
Ancienne valeur:
N/A
Nouvelle valeur:
CWE-319: Cleartext Transmission of Sensitive Information - The product transmits sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors....
Total des modifications: 1 Dernière mise à jour: 1 month ago

> REFERENCES

https://github.com/mariadb-corporation/mariadb-connector-r2dbc/commit/be786603ec...
https://github.com/mariadb-corporation/mariadb-connector-r2dbc/releases/tag/1.4....
https://github.com/mariadb-corporation/mariadb-connector-r2dbc/security/advisori...
https://hackerone.com/reports/3784556
https://jira.mariadb.org/browse/R2DBC-115
« BACK_TO_HOME