CVE-2026-119280
Description
A flaw was found in MariaDB Connector/J. A malicious database server or an attacker intercepting network traffic can trigger a Denial of Service (DoS) by returning crafted transaction identifier lengths during distributed transaction (XA) recovery. Because the connector does not validate these length values against allowed limits or the incoming data payload, processing the response can cause excessive memory allocations or unhandled exceptions that crash the client application.
Statement
This vulnerability is rated as Low severity because successful exploitation requires an attacker to either control the upstream database server or perform an active machine-in-the-middle attack on the connection. The flaw is confined to distributed XA transaction recovery procedures when parsing responses from the database. As a result, the vulnerability cannot lead to compromise of sensitive data or unauthorized system access, restricting the impact entirely to client-side denial of service.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 3.7 | N/A | 3.7 |
| Attack Vector | Network | N/A | Network |
| Attack Complexity | High | N/A | High |
| Privileges Required | None | N/A | None |
| User Interaction | None | N/A | None |
| Scope | Unchanged | N/A | Unchanged |
| Confidentiality | None | N/A | None |
| Integrity Impact | None | N/A | None |
| Availability Impact | Low | N/A | Low |
Vector
Red Hat: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
cve.org: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
Understanding the Weakness (CWE)
Confidentiality,Integrity
Technical Impact: Read Memory; Modify Memory; Varies by Context
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