VulnerabilityPublished 17 Sep 2026Updated 21 Sep 2026

CVE-2026-61700: mariadb-connector-j · Improper Access Control

Affects mariadb-connector-jSource CVE Database V5

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Not known to be exploited · CVSS 3.7 Low · fixed in 3.5.9 : update mariadb-connector-j when convenient.

Data as of 1 Nov 2026, 11:03 UTC

CVSS 3.1 base score

3.7Low

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.3% chance of exploitation in 30 days – higher than 30% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 3.5.9, 3.4.3, 3.3.5 +1

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector: Network
Attack Complexity: High
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: Low
Integrity: None
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: High: A successful attack depends on conditions beyond the attacker's control. That is, a successful attack cannot be accomplished at will, but requires the attacker to invest in some measurable amount of effort in preparation or execution against the vulnerable component before a successful attack can be expected. For example, a successful attack may require an attacker to: gather knowledge about the environment in which the vulnerable target/component exists; prepare the target environment to improve exploit reliability; or inject themselves into the logical network path between the target and the resource requested by the victim in order to read and/or modify network communications (e.g., a man in the middle attack).
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: Low: There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the impacted component.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 17 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 1 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

Upgrade mariadb-connector-j and org.mariadb.jdbc/mariadb-connector-j to 3.5.9, 3.4.3, 3.3.5 or 2.7.14.

Affected software

Product	Affected	Fixed in
mariadb-corporationmariadb-connector-j	Affected >=3.5.0 <3.5.9	Fixed in 3.5.9
mariadb-corporationmariadb-connector-j	Affected >=3.4.0 <3.4.3	Fixed in 3.4.3
mariadb-corporationmariadb-connector-j	Affected >=3.0.0 <3.3.5	Fixed in 3.3.5
mariadb-corporationmariadb-connector-j	Affected <2.7.14	Fixed in 2.7.14
Mavenorg.mariadb.jdbc/mariadb-connector-j`pkg:maven/org.mariadb.jdbc/mariadb-connector-j`Other threats	Affected <2.7.14 >=3.0.0 <3.3.5 >=3.4.0 <3.4.3 >=3.5.0 <3.5.9	Fixed in 2.7.14 3.3.5 3.4.3 3.5.9

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade MariaDB Connector/J to version 2.7.14, 3.3.5, 3.4.3, or 3.5.9 or later where this issue is fixed. No other mitigations are indicated by the vendor advisory. Patch status is confirmed fixed in these versions.

Description

CVE-2026-61700 is an improper access control vulnerability in MariaDB Connector/J affecting versions prior to 2.7.14, 3.3.5, 3.4.3, and 3.5.9. The flaw allows a rogue or man-in-the-middle server to cause the connector to transmit a local file despite the allowLocalInfile option being disabled, but only the exact file requested by the application can be sent. Exploitation requires an application that loads sensitive data over an untrusted connection. This issue has a CVSS score of 3.7 (medium severity) and is fixed in the specified versions.

Impact

An attacker controlling or intercepting the server connection can cause the connector to send a local file from the client system despite the allowLocalInfile option being disabled. The attacker cannot specify arbitrary files but can only obtain the file the application requested to load. This could lead to unintended disclosure of sensitive local files if the application loads such files over an untrusted network. The overall impact is limited by the requirement that the application must actively load local files and the inability to redirect to arbitrary files.

Summary

MariaDB Connector/J versions before 2.7.14, 3.3.5, 3.4.3, and 3.5.9 improperly handle server-initiated LOCAL INFILE protocol packets (0xfb) in the ClientMessage.readPacket method. When an application issues a LOAD DATA LOCAL INFILE COM_QUERY, a malicious or man-in-the-middle server can echo the filename and cause the connector to send the file even if allowLocalInfile is set to false. However, the server cannot redirect the request to arbitrary files; it can only receive the exact file the application requested. This vulnerability requires the application to actively load sensitive data over an untrusted connection. The issue is resolved in the fixed versions.

CWE-284Improper Access Control (opens in a new tab)
Pillar weaknessCWE Top 25 (2025): #19OWASP Top 10 A01:2025: Broken Access Control (opens in a new tab)
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
MITRE discourages mapping vulnerabilities to this broad entry; the root cause is usually a more specific weakness.
Architecture and Design · Operation
Very carefully manage the setting, management, and handling of privileges. Explicitly manage trust zones in the software.
Architecture and Design · Separation of Privilege
Compartmentalize the system to have "safe" areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
OWASP Cheat Sheets
Docker Security (opens in a new tab)
Third Party Javascript Management (opens in a new tab)
Virtual Patching (opens in a new tab)
Authorization (opens in a new tab)
OWASP ASVS 4.0.3
V1.4.4 (opens in a new tab)
V1.4.5 (opens in a new tab)
V1.10.1 (opens in a new tab)
Attack patterns
Embedding Scripts within Scripts (opens in a new tab)
Modification of Windows Service Configuration (opens in a new tab)
Malicious Root Certificate (opens in a new tab)
Intent Spoof (opens in a new tab)
WebView Exposure (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 18 Oct 2026, 00:24 UTC

WeaknessesCWE-284

Technical details

References

Community reviews

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