> CVE-2026-55857 [MEDIUM]

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PUBLISHED
2026-08-28 23:17
MODIFIED
2026-08-28 23:17
CVSS_SCORE V3
5.9
EPSS (Prob. Exploit)
0.39%
Top 68.4%
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/J is used to connect applications developed in Java to MariaDB and MySQL databases. Prior to 2.7.14, 3.3.5, 3.4.3, and 3.5.9, PAM dialog authentication can be coerced into transmitting the account password over an insecure connection. The mysql_clear_password plugin is gated behind a secure transport, but the sibling PAM handler SendPamAuthPacketFactory, named dialog by the server, does not declare that requirement and inherits the default secure-required value false; older branches implement the same affected behavior in SendPamAuthPacket. A hostile or man-in-the-middle server can send an Authentication Switch Request for dialog over plain TCP, causing the driver to return the user's password in cleartext when sslMode=DISABLE and restrictedAuth=null, which is the default configuration. Properly verified TLS and local Unix sockets are not exposed to this transport vector. This issue is fixed in versions 2.7.14, 3.3.5, 3.4.3, and 3.5.9.

> 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.

> RED HAT SECURITY ADVISORIES

Red Hat Security Advisory: Red Hat build of Quarkus 3.27.6 release and security update
An update is now available for Red Hat build of Quarkus. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base sco...

> GITHUB SECURITY ADVISORY

GHSA-qxvw-fvwx-5cp7 MODERATE

org.mariadb.jdbc:mariadb-java-client has Cleartext Transmission of Sensitive Information and Insufficiently Protected Credentials

AFFECTED PACKAGES:
MAVEN / org.mariadb.jdbc:mariadb-java-client
>= 3.5.0, < 3.5.9
Fixed in: 3.5.9
MAVEN / org.mariadb.jdbc:mariadb-java-client
>= 3.4.0, < 3.4.3
Fixed in: 3.4.3
MAVEN / org.mariadb.jdbc:mariadb-java-client
>= 3.0.0, < 3.3.5
Fixed in: 3.3.5
MAVEN / org.mariadb.jdbc:mariadb-java-client
< 2.7.14
Fixed in: 2.7.14

> OSV (GOOGLE OPEN SOURCE VULNERABILITIES)

MariaDB Connector/J: Cleartext Transmission of Sensitive Information and Insufficiently Protected Credentials

AFFECTED PACKAGES:
Unknown / Unknown
80 versions affected
ALIASES:
GHSA-qxvw-fvwx-5cp7

> 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-j/commit/a8599ab1cbe4b8...
https://github.com/mariadb-corporation/mariadb-connector-j/commit/f4a727c764d1cf...
https://github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.4.3
https://github.com/mariadb-corporation/mariadb-connector-j/releases/tag/3.5.9
https://github.com/mariadb-corporation/mariadb-connector-j/security/advisories/G...
https://jira.mariadb.org/browse/CONJ-1320
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