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CVE-2026-3494

MediumPublished

MariaDB Server Audit Plugin Comment Handling Bypass

Published: Mar 3, 2026
Updated: Mar 16, 2026
Assigning CNA: AMZN
Evidence observed: Aug 25, 2026

Primary CVSS

5.3/ 10Medium

nvd · CVSS 4.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS probability estimate

0.3%

Low · next 30 days

Percentile: 20.0%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

In MariaDB server version through 11.8.5, when server audit plugin is enabled with server_audit_events variable configured with QUERY_DCL, QUERY_DDL, or QUERY_DML filtering, if an authenticated database user invokes a SQL statement prefixed with double-hyphen (—) or hash (#) style comments, the statement is not logged.

Sources

CVE-2026-3494_VerficationPoC
Reproduces and analyzes CVE-2026-3494, an audit logging bypass in MariaDB server_audit plugin, using Docker-based multi-version testing to compare logging behavior across vulnerable and patched versions.

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