CVE-2026-102469
CriticalCVSS 9.2Summary
The Vert.x DB2 client (vertx-db2-client) deserializes User Defined Type (UDT) column data using a bare ObjectInputStream.readObject() call without an ObjectInputFilter or class allowlist. A malicious or man-in-the-middle DRDA server can send a response with a column tagged as UDT (FDOCA LID 0x50), causing deserialization of attacker-controlled bytes. TLS is disabled by default, making man-in-the-middle exploitation feasible.
Risk Assessment
If a Java deserialization gadget chain is present on the application's classpath, remote code execution is possible. Otherwise, denial of service can be triggered via crafted object graphs.
Recommendation
Upgrade io.vertx:vertx-db2-client to a patched version and enable TLS for DB2 connections to mitigate man-in-the-middle attacks.
Related vulnerabilities
- CVE-2026-109694Critical
The Fluent CRM plugin (up to 3.2.5) contains an incorrect privilege assignment vulnerability that allows privilege escalation. An attacker could exploit this flaw to gain higher privileges within the WordPress system.
- CVE-2026-108497Critical
The Amelia Booking plugin (up to 2.4.10) contains an SQL Injection vulnerability due to improper neutralization of special elements in SQL commands. An attacker could execute arbitrary SQL queries, potentially leading to data leakage or modification.
- CVE-2026-50619Critical
A path traversal vulnerability has been reported in Qsirch, which could allow remote attackers to read unexpected files or system data. The vulnerability has been fixed in version 7.0.3.0 and later.
- CVE-2026-50612Critical
A Unix symbolic link (symlink) following vulnerability has been reported in QuMagie. If a remote attacker gains a user account, they can exploit the vulnerability to compromise the security of the system. The vulnerability has been fixed in version 2.9.2 and later.
- CVE-2026-47786Critical
An OS command injection vulnerability has been reported in HybridDesk Station, which could allow remote attackers to execute arbitrary commands. The vulnerability has been fixed in versions 4.2.23 and 4.3.4 and later.
- CVE-2026-34006Critical
A missing authentication for critical function vulnerability has been reported in sMedio DTCP MOVE, which could allow remote attackers to gain access to the system. The vulnerability has been fixed in version 1.4.5 and later.
- CVE-2026-19863Critical
In EthereumAuthenticator, an unauthenticated client may access certain protected resources if the request path contains the configured login path. This is caused by the authenticator using an unanchored substring match when identifying the login page, which may replace authentication or role requirements with ALLOWED.
- CVE-2026-16438Critical
Mitsubishi Electric products (GENESIS64, ICONICS Suite, Hyper Historian, AnalytiX, MobileHMI, MC Works64) versions 10.97.3 and prior contain an incorrect privilege assignment vulnerability. Installers grant default DCOM permissions to the administrator account, allowing an attacker to locally or remotely launch and operate DCOM objects that should require UAC elevation.
- CVE-2026-16436Critical
Mitsubishi Electric products (GENESIS, GENESIS64, ICONICS Suite, Hyper Historian, AnalytiX, MobileHMI, IoTWorX, MC Works64, GENESIS32, BizViz) contain a weak password recovery mechanism for forgotten passwords. The challenge response used to unlock the system is common to all users and fixed, allowing a remote attacker to unlock the system after obtaining it.
- CVE-2026-101287Critical
Authentication bypass vulnerability in Stela versions prior to 1.60.1 due to the use of a cookie named “authProcess” without validating its integrity. The application stores the user identifier (userId) and the status of the authentication process (validSteps) in this cookie and relies on these client-modifiable values to complete the login process.
Original NVD description (English source)
In Eclipse Vert.x versions [4.0.0, 4.5.34] or [5.0.0,5.0.12] or [5.1.0,5.1.9] or [5.2.0, 5.2.0], the Vert.x DB2 client (vertx-db2-client) contains DRDA protocol handling code that deserializes User Defined Type (UDT) column data using a bare ObjectInputStream.readObject() call with no ObjectInputFilter or class allowlist. This code path is triggered when a DRDA server sends a result set with a column tagged as UDT (FDOCA protocol LID 0x50). However, DB2 does not support this type of UDT. The FDOCA 0x50 type is never sent by a legitimate DB2 server. Nevertheless, a malicious or man-in-the-middle DRDA server could craft a response with a 0x50-tagged column, causing the client to deserialize arbitrary attacker-controlled bytes on the Vert.x event loop before any application code can inspect or reject the data. If a Java deserialization gadget chain is present on the application's classpath, this enables remote code execution. Without a gadget chain, denial of service is possible via crafted object graphs. TLS is disabled by default, making man-in-the-middle exploitation feasible. The impacted component is io.vertx:vertx-db2-client.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS