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🛡️ CVE-2026-3494 — aurora-mysql

🟡 CVSS 5.0 — Medium ✅ No Known Exploit CWE-778 NVD
5.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

MariaDB Server Audit Plugin Comment Handling Bypass

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity low, availability none.

CVSS metrics in full

The score comes from this vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

  • Attack vector: Network — reachable from anywhere that can route to the service.
  • Attack complexity: Low — the attack works reliably, with no preparation.
  • Privileges required: Low — an ordinary user account is enough.
  • User interaction: None — nobody has to be tricked into anything.
  • Scope: Unchanged — the damage stays inside the vulnerable component.
  • Confidentiality impact: None.
  • Integrity impact: Low — limited, and the attacker does not choose what is affected.
  • Availability impact: None.

Weakness class

CVE-2026-3494 is classified as CWE-778: Insufficient Logging. When a security-critical event occurs, the product either does not record the event or omits important details about the event when logging it.

Affected software

CVE-2026-3494 is recorded against 5 packages.

  • aurora-mysql
  • mariadb
  • mariadb-min
  • mysql-client
  • relational-database-service (from 11.8.3 up to 11.8.5)

Timeline and source

Published on 3 March 2026 and last revised on 14 July 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

aws.amazon.com
github.com
github.com

Same weakness in other software

These advisories are the same class of weakness (CWE-778: Insufficient Logging) in other software:

CVE-2026-3494 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity MEDIUM
CVSS Score 5.0
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
CWE CWE-778
Public Exploit ✅ No
Source NVD
Published 2026-03-03
Updated 2026-08-20
Modified 2026-07-14

Affected Packages

Software From version Fixed in
aurora-mysql — —
mariadb — —
mariadb-min — —
mysql-client — —
relational-database-service 11.8.3 11.8.5

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