CVE-2026-3494 | 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.

Published: 2026-03-03 Last update: 2026-06-17 Assigner: ff89ba41-3aa1-4d27-914a-91399e9639e5 Source: ff89ba41-3aa1-4d27-914a-91399e9639e5
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2026-3494 is rated Low Risk (28.1/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.27%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2026-3494

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.01% 0.27% +0.26%
2 2026-03-04 — 0.01% —

Full EPSS history (2 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2026-3494

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 4.0 MEDIUM
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 Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network.
Attack complexity (AC:L)
Exploitation conditions are straightforward and stable.
Attack requirements (AT:N)
No additional preconditions are required beyond normal reachability.
Privileges required (PR:L)
Low privileges are required.
User interaction (UI:N)
No user interaction is required.
Vulnerable system confidentiality impact (VC:N)
No confidentiality impact on the vulnerable system.
Vulnerable system integrity impact (VI:L)
Limited integrity impact on the vulnerable system.
Vulnerable system availability impact (VA:N)
No availability impact on the vulnerable system.
Subsequent system confidentiality impact (SC:N)
No confidentiality impact on subsequent systems.
Subsequent system integrity impact (SI:N)
No integrity impact on subsequent systems.
Subsequent system availability impact (SA:N)
No availability impact on subsequent systems.
Exploit maturity (threat) (E:X)
Not defined: no reliable threat intelligence; scoring assumes the worst case (equivalent to Attacked).
Confidentiality requirement (CR:X)
Not defined: insufficient information; scoring treats this like High (worst case).
Integrity requirement (IR:X)
Not defined: insufficient information; scoring treats this like High (worst case).
Availability requirement (AR:X)
Not defined: insufficient information; scoring treats this like High (worst case).
Modified attack vector (MAV:X)
Not defined: scoring uses the Base Attack Vector (AV).
Modified attack complexity (MAC:X)
Not defined: scoring uses the Base Attack Complexity (AC).
Modified attack requirements (MAT:X)
Not defined: scoring uses the Base Attack Requirements (AT).
Modified privileges required (MPR:X)
Not defined: scoring uses the Base Privileges Required (PR).
Modified user interaction (MUI:X)
Not defined: scoring uses the Base User Interaction (UI).
Modified vulnerable system confidentiality impact (MVC:X)
Not defined: scoring uses the Base VC metric.
Modified vulnerable system integrity impact (MVI:X)
Not defined: scoring uses the Base VI metric.
Modified vulnerable system availability impact (MVA:X)
Not defined: scoring uses the Base VA metric.
Modified subsequent system confidentiality impact (MSC:X)
Not defined: scoring uses the Base SC metric.
Modified subsequent system integrity impact (MSI:X)
Not defined: scoring uses the Base SI metric.
Modified subsequent system availability impact (MSA:X)
Not defined: scoring uses the Base SA metric.
Safety (supplemental) (S:X)
Not evaluated.
Automatable (supplemental) (AU:X)
Not evaluated.
Recovery (supplemental) (R:X)
Not evaluated.
Value density (supplemental) (V:X)
Not evaluated.
Vulnerability response effort (supplemental) (RE:X)
Not evaluated.
Provider urgency (supplemental) (U:X)
Not evaluated.
 — — ff89ba41-3aa1-4d27-914a-91399e9639e5
4.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 2.8 1.4 ff89ba41-3aa1-4d27-914a-91399e9639e5

Weakness enumeration for CVE-2026-3494

OS Trackers for CVE-2026-3494

vendor priority summary link
alpine — CVE-2026-3494: 1 source package rows (mariadb); 132 state rows across 6 repos (3.19-main, 3.20-main, 3.21-main, 3.22-main, 3.23-main, edge-main); fixed 5, open 127. https://security.alpinelinux.org/vuln/CVE-2026-3494
redhat medium — https://access.redhat.com/security/cve/CVE-2026-3494
suse medium — https://www.suse.com/security/cve/CVE-2026-3494/

Affected software / configurations for CVE-2026-3494

Vendor Product Version Raw CPE
mariadb mariadb <= 10.6.24 cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:*
mariadb mariadb >= 10.7.0, <= 10.11.15 cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:*
mariadb mariadb >= 11.0.0, <= 11.4.9 cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:*
mariadb mariadb >= 11.5.0, <= 11.8.5 cpe:2.3:a:mariadb:mariadb:*:*:*:*:*:*:*:*
amazon aurora_mysql <= 2.12.5 cpe:2.3:a:amazon:aurora_mysql:*:*:*:*:*:*:*:*
amazon aurora_mysql >= 3.01.0, <= 3.04.5 cpe:2.3:a:amazon:aurora_mysql:*:*:*:*:*:*:*:*
amazon aurora_mysql >= 3.05.1, <= 3.10.2 cpe:2.3:a:amazon:aurora_mysql:*:*:*:*:*:*:*:*
amazon aurora_mysql 3.11.0 cpe:2.3:a:amazon:aurora_mysql:3.11.0:*:*:*:*:*:*:*
amazon relational_database_service <= 5.7.44-rds.20251212 cpe:2.3:a:amazon:relational_database_service:*:*:*:*:*:mysql:*:*
amazon relational_database_service <= 10.6.24 cpe:2.3:a:amazon:relational_database_service:*:*:*:*:*:mariadb:*:*
amazon relational_database_service >= 8.0.11, <= 8.0.44 cpe:2.3:a:amazon:relational_database_service:*:*:*:*:*:mysql:*:*
amazon relational_database_service >= 8.4.3, <= 8.4.7 cpe:2.3:a:amazon:relational_database_service:*:*:*:*:*:mysql:*:*
amazon relational_database_service >= 10.11.4, <= 10.11.15 cpe:2.3:a:amazon:relational_database_service:*:*:*:*:*:mariadb:*:*
amazon relational_database_service >= 11.4.3, <= 11.4.9 cpe:2.3:a:amazon:relational_database_service:*:*:*:*:*:mariadb:*:*
amazon relational_database_service >= 11.8.3, <= 11.8.5 cpe:2.3:a:amazon:relational_database_service:*:*:*:*:*:mariadb:*:*

References for CVE-2026-3494

cvelogic Threat Intelligence